diff --git a/app/src/main/java/com/pixelized/rplexicon/data/model/AssignedSpell.kt b/app/src/main/java/com/pixelized/rplexicon/data/model/AssignedSpell.kt
index 90b11d7..cff8bae 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/model/AssignedSpell.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/model/AssignedSpell.kt
@@ -1,10 +1,12 @@
 package com.pixelized.rplexicon.data.model
 
 import com.pixelized.rplexicon.data.model.roll.Throw
+import com.pixelized.rplexicon.script.Script
 
 data class AssignedSpell(
     val hit: Throw?,
     val effect: Throw?,
     val level: Throw?,
     val spell: Spell,
+    val script: Script?,
 )
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/model/Attack.kt b/app/src/main/java/com/pixelized/rplexicon/data/model/Attack.kt
index 8b81358..1e12c5f 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/model/Attack.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/model/Attack.kt
@@ -2,14 +2,16 @@ package com.pixelized.rplexicon.data.model
 
 import android.net.Uri
 import com.pixelized.rplexicon.data.model.roll.Throw
+import com.pixelized.rplexicon.script.Script
 
 data class Attack(
-    val icon: Uri?,
     val title: String,
     val type: Type,
     val range: String?,
     val hit: Throw?,
     val damage: Throw?,
+    val script: Script?,
+    val icon: Uri?,
     val alterations: List<String>,
 ) {
     enum class Type(val key: String) {
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/model/Skill.kt b/app/src/main/java/com/pixelized/rplexicon/data/model/Skill.kt
index 1ceecf9..324fb7b 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/model/Skill.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/model/Skill.kt
@@ -2,13 +2,15 @@ package com.pixelized.rplexicon.data.model
 
 import android.net.Uri
 import com.pixelized.rplexicon.data.model.roll.Throw
+import com.pixelized.rplexicon.script.Script
 
 data class Skill(
-    val icon: Uri?,
     val name: String,
     val amount: Int?,
     val rest: String?,
     val cost: String?,
     val effect: Throw?,
     val passive: Boolean,
+    val script: Script?,
+    val icon: Uri?,
 )
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/model/alteration/Alteration.kt b/app/src/main/java/com/pixelized/rplexicon/data/model/alteration/Alteration.kt
index 5b8195f..3a7effc 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/model/alteration/Alteration.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/model/alteration/Alteration.kt
@@ -4,12 +4,14 @@ import android.net.Uri
 import com.pixelized.rplexicon.data.model.Property
 import com.pixelized.rplexicon.data.model.roll.Dice
 import com.pixelized.rplexicon.data.model.roll.Flat
+import com.pixelized.rplexicon.script.Script
 
 data class Alteration(
-    val icon: Uri?,
     val name: String,
     val source: String,
     val target: String,
+    val script: Script?,
+    val icon: Uri?,
     val status: Map<Property, Status>,
 ) {
     data class Status(
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/parser/AttackParser.kt b/app/src/main/java/com/pixelized/rplexicon/data/parser/AttackParser.kt
index 8978078..f692f95 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/parser/AttackParser.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/parser/AttackParser.kt
@@ -5,11 +5,13 @@ import com.google.api.services.sheets.v4.model.ValueRange
 import com.pixelized.rplexicon.data.model.Attack
 import com.pixelized.rplexicon.data.model.CharacterSheet
 import com.pixelized.rplexicon.data.parser.roll.ThrowParser
+import com.pixelized.rplexicon.script.ScriptParser
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
 import javax.inject.Inject
 
 class AttackParser @Inject constructor(
     private val throwParser: ThrowParser,
+    private val scriptParser: ScriptParser,
 ) {
     @Throws(IncompatibleSheetStructure::class)
     fun parse(
@@ -33,6 +35,7 @@ class AttackParser @Inject constructor(
                             title = title,
                             type = parseType(value = row.parse(column = TYPE)),
                             range = row.parse(column = RANGE),
+                            script = row.parse(column = SCRIPT)?.let { scriptParser.parse(it) },
                             hit = throwParser.parse(value = row.parse(column = HIT)),
                             damage = throwParser.parse(value = row.parse(column = DAMAGE)),
                             alterations = row.parseList(column = ALTERATION),
@@ -64,6 +67,18 @@ class AttackParser @Inject constructor(
         private val DAMAGE = column("Dommage")
         private val ALTERATION = column("Altérations")
         private val ICON = column("Icone")
-        private val COLUMNS get() = listOf(CHARACTER, NAME, TYPE, RANGE, HIT, DAMAGE, ALTERATION, ICON)
+        private val SCRIPT = column("Script")
+        private val COLUMNS
+            get() = listOf(
+                CHARACTER,
+                NAME,
+                TYPE,
+                RANGE,
+                HIT,
+                DAMAGE,
+                ALTERATION,
+                SCRIPT,
+                ICON
+            )
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/parser/SkillParser.kt b/app/src/main/java/com/pixelized/rplexicon/data/parser/SkillParser.kt
index b09e949..83afb48 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/parser/SkillParser.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/parser/SkillParser.kt
@@ -4,11 +4,13 @@ import com.google.api.services.sheets.v4.model.ValueRange
 import com.pixelized.rplexicon.data.model.CharacterSheet
 import com.pixelized.rplexicon.data.model.Skill
 import com.pixelized.rplexicon.data.parser.roll.ThrowParser
+import com.pixelized.rplexicon.script.ScriptParser
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
 import javax.inject.Inject
 
 class SkillParser @Inject constructor(
     private val throwParser: ThrowParser,
+    private val scriptParser: ScriptParser,
 ) {
     @Throws(IncompatibleSheetStructure::class)
     fun parse(
@@ -32,7 +34,8 @@ class SkillParser @Inject constructor(
                             rest = row.parse(column = REST),
                             cost = row.parse(column = COST),
                             effect = throwParser.parse(row.parse(column = EFFECT)),
-                            passive = row.parseBool(column = PASSIVE) ?: false
+                            passive = row.parseBool(column = PASSIVE) ?: false,
+                            script = row.parse(column = SCRIPT)?.let { scriptParser.parse(it) },
                         )
                         skills.getOrPut(characterSheet.name) { mutableListOf() }.add(skill)
                     }
@@ -52,7 +55,19 @@ class SkillParser @Inject constructor(
         private val COST = column("Coût")
         private val EFFECT = column("Effect")
         private val PASSIVE = column("Passif")
+        private val SCRIPT = column("Script")
 
-        private val COLUMNS get() = listOf(CHARACTER, ICON, NAME, AMOUNT, REST, COST, EFFECT, PASSIVE)
+        private val COLUMNS
+            get() = listOf(
+                CHARACTER,
+                ICON,
+                NAME,
+                AMOUNT,
+                REST,
+                COST,
+                EFFECT,
+                PASSIVE,
+                SCRIPT
+            )
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/parser/alteration/AlterationParser.kt b/app/src/main/java/com/pixelized/rplexicon/data/parser/alteration/AlterationParser.kt
index b709ae2..291f71c 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/parser/alteration/AlterationParser.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/parser/alteration/AlterationParser.kt
@@ -1,19 +1,21 @@
 package com.pixelized.rplexicon.data.parser.alteration
 
 import com.google.api.services.sheets.v4.model.ValueRange
-import com.pixelized.rplexicon.data.model.alteration.Alteration
 import com.pixelized.rplexicon.data.model.CharacterSheet
 import com.pixelized.rplexicon.data.model.Property
+import com.pixelized.rplexicon.data.model.alteration.Alteration
 import com.pixelized.rplexicon.data.parser.column
 import com.pixelized.rplexicon.data.parser.parserScope
 import com.pixelized.rplexicon.data.parser.roll.DiceParser
 import com.pixelized.rplexicon.data.parser.roll.FlatValueParser
+import com.pixelized.rplexicon.script.ScriptParser
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
 import javax.inject.Inject
 
 class AlterationParser @Inject constructor(
     private val diceParser: DiceParser,
     private val flatParser: FlatValueParser,
+    private val scriptParser: ScriptParser,
 ) {
     @Throws(IncompatibleSheetStructure::class)
     fun parse(
@@ -37,6 +39,7 @@ class AlterationParser @Inject constructor(
                             name = name,
                             source = source,
                             target = target,
+                            script = row.parse(column = SCRIPT)?.let { scriptParser.parse(it) },
                             status = properties.mapNotNull { property ->
                                 val column = column(property.key)
                                 row.parse(column = column)
@@ -95,7 +98,14 @@ class AlterationParser @Inject constructor(
         private val TARGET = column("Cible")
         private val SOURCE = column("Source")
         private val ICON = column("Icone")
+        private val SCRIPT = column("Script")
         private val COLUMNS
-            get() = listOf(NAME, SOURCE, TARGET, ICON) + Property.entries.map { column(it.key) }
+            get() = listOf(
+                NAME,
+                SOURCE,
+                TARGET,
+                SCRIPT,
+                ICON
+            ) + Property.entries.map { column(it.key) }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/parser/spell/AssignedSpellParser.kt b/app/src/main/java/com/pixelized/rplexicon/data/parser/spell/AssignedSpellParser.kt
index 111e764..632d760 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/parser/spell/AssignedSpellParser.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/parser/spell/AssignedSpellParser.kt
@@ -6,11 +6,13 @@ import com.pixelized.rplexicon.data.model.Spell
 import com.pixelized.rplexicon.data.parser.column
 import com.pixelized.rplexicon.data.parser.parserScope
 import com.pixelized.rplexicon.data.parser.roll.ThrowParser
+import com.pixelized.rplexicon.script.ScriptParser
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
 import javax.inject.Inject
 
 class AssignedSpellParser @Inject constructor(
     private val throwParser: ThrowParser,
+    private val scriptParser: ScriptParser,
 ) {
     @Throws(IncompatibleSheetStructure::class)
     fun parse(
@@ -31,6 +33,7 @@ class AssignedSpellParser @Inject constructor(
                             effect = throwParser.parse(value = row.parse(EFFECT)),
                             level = throwParser.parse(value = row.parse(LEVEL)),
                             spell = spell,
+                            script = row.parse(SCRIPT)?.let { scriptParser.parse(it) }
                         )
                         assignedSpells
                             .getOrPut(key = character) { mutableListOf() }
@@ -47,7 +50,8 @@ class AssignedSpellParser @Inject constructor(
         private val HIT = column("Touché")
         private val EFFECT = column("Effet")
         private val LEVEL = column("Par niveau")
+        private val SCRIPT = column("Script")
 
-        private val COLUMNS get() = listOf(NAME, HIT, EFFECT, LEVEL)
+        private val COLUMNS get() = listOf(NAME, HIT, EFFECT, LEVEL, SCRIPT)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/ActionRepository.kt b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/ActionRepository.kt
index ff48a95..6ece31d 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/ActionRepository.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/ActionRepository.kt
@@ -5,10 +5,18 @@ import com.pixelized.rplexicon.data.model.CharacterSheet
 import com.pixelized.rplexicon.data.parser.AttackParser
 import com.pixelized.rplexicon.data.repository.CharacterBinder
 import com.pixelized.rplexicon.data.repository.GoogleSheetServiceRepository
+import com.pixelized.rplexicon.data.repository.authentication.FirebaseRepository
+import com.pixelized.rplexicon.script.ScriptExecutor
 import com.pixelized.rplexicon.utilitary.Update
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.stateIn
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -16,15 +24,29 @@ import javax.inject.Singleton
 class ActionRepository @Inject constructor(
     private val googleRepository: GoogleSheetServiceRepository,
     private val actionParser: AttackParser,
+    firebaseRepository: FirebaseRepository,
 ) {
-    private val _data = MutableStateFlow<Map<String, List<Attack>>>(emptyMap())
-    val data: StateFlow<Map<String, List<Attack>>> get() = _data
+    private val _actions = MutableStateFlow<Map<String, List<Attack>>>(emptyMap())
+    val actions: StateFlow<Map<String, List<Attack>>> =
+        combine(_actions, firebaseRepository.getAlterationStatus()) { actions, status ->
+            actions.mapValues { entry: Map.Entry<String, List<Attack>> ->
+                val executor = ScriptExecutor(
+                    character = entry.key,
+                    alterations = status,
+                )
+                entry.value.filter { it.script == null || it.script.predicate(executor) }
+            }
+        }.stateIn(
+            scope = CoroutineScope(Dispatchers.Default + Job()),
+            started = SharingStarted.Lazily,
+            initialValue = emptyMap()
+        )
 
     var lastSuccessFullUpdate: Update = Update.INITIAL
         private set
 
     fun find(character: String?): List<Attack>? {
-        return character?.let { _data.value[it] }
+        return character?.let { actions.value[it] }
     }
 
     fun find(character: String?, action: String): Attack? {
@@ -39,7 +61,7 @@ class ActionRepository @Inject constructor(
                 value = request.execute(),
                 charactersSheets = characters
             )
-            _data.emit(data)
+            _actions.emit(data)
             lastSuccessFullUpdate = Update.currentTime()
         }
     }
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/AlterationRepository.kt b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/AlterationRepository.kt
index f8f4e9e..e9c3579 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/AlterationRepository.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/AlterationRepository.kt
@@ -6,12 +6,20 @@ import com.pixelized.rplexicon.data.model.alteration.Alteration
 import com.pixelized.rplexicon.data.parser.alteration.AlterationParser
 import com.pixelized.rplexicon.data.repository.CharacterBinder
 import com.pixelized.rplexicon.data.repository.GoogleSheetServiceRepository
+import com.pixelized.rplexicon.data.repository.authentication.FirebaseRepository
+import com.pixelized.rplexicon.script.ScriptExecutor
 import com.pixelized.rplexicon.utilitary.Update
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.firstOrNull
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -19,8 +27,23 @@ import javax.inject.Singleton
 class AlterationRepository @Inject constructor(
     private val googleRepository: GoogleSheetServiceRepository,
     private val alterationParser: AlterationParser,
+    firebaseRepository: FirebaseRepository,
 ) {
-    private val assignedAlterations = MutableStateFlow<Map<String, List<Alteration>>>(emptyMap())
+    private val alterations = MutableStateFlow<Map<String, List<Alteration>>>(emptyMap())
+    private val assignedAlterations: StateFlow<Map<String, List<Alteration>>> =
+        combine(alterations, firebaseRepository.getAlterationStatus()) { alterations, status ->
+            alterations.mapValues { entry: Map.Entry<String, List<Alteration>> ->
+                val executor = ScriptExecutor(
+                    character = entry.key,
+                    alterations = status,
+                )
+                entry.value.filter { it.script == null || it.script.predicate(executor) }
+            }
+        }.stateIn(
+            scope = CoroutineScope(Dispatchers.Default + Job()),
+            started = SharingStarted.Lazily,
+            initialValue = emptyMap()
+        )
 
     var lastSuccessFullUpdate: Update = Update.INITIAL
         private set
@@ -37,9 +60,8 @@ class AlterationRepository @Inject constructor(
      * get an alteration for a character that have [alteration] as namer.
      * @return a nullable [Alteration]
      */
-    suspend fun getAssignedAlterationSnapshot(character: String?, alteration: String?): Alteration? {
-        return assignedAlterations.firstOrNull()?.get(character)
-            ?.firstOrNull { it.name == alteration }
+    fun getAssignedAlterationSnapshot(character: String?, alteration: String?): Alteration? {
+        return assignedAlterations.value[character]?.firstOrNull { it.name == alteration }
     }
 
     /**
@@ -75,7 +97,7 @@ class AlterationRepository @Inject constructor(
         googleRepository.fetch { sheet ->
             val request = sheet.get(CharacterBinder.ID, CharacterBinder.ALTERATION)
             val data = alterationParser.parse(sheet = request.execute(), characterSheets = sheets)
-            assignedAlterations.tryEmit(data)
+            alterations.tryEmit(data)
             lastSuccessFullUpdate = Update.currentTime()
         }
     }
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SkillRepository.kt b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SkillRepository.kt
index 4fa9b03..d8a327f 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SkillRepository.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SkillRepository.kt
@@ -5,10 +5,18 @@ import com.pixelized.rplexicon.data.model.Skill
 import com.pixelized.rplexicon.data.parser.SkillParser
 import com.pixelized.rplexicon.data.repository.CharacterBinder
 import com.pixelized.rplexicon.data.repository.GoogleSheetServiceRepository
+import com.pixelized.rplexicon.data.repository.authentication.FirebaseRepository
+import com.pixelized.rplexicon.script.ScriptExecutor
 import com.pixelized.rplexicon.utilitary.Update
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.stateIn
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -16,9 +24,23 @@ import javax.inject.Singleton
 class SkillRepository @Inject constructor(
     private val googleRepository: GoogleSheetServiceRepository,
     private val skillParser: SkillParser,
+    firebaseRepository: FirebaseRepository,
 ) {
     private val _skills = MutableStateFlow<Map<String, List<Skill>>>(emptyMap())
-    val skills: StateFlow<Map<String, List<Skill>>> get() = _skills
+    val skills: StateFlow<Map<String, List<Skill>>> =
+        combine(_skills, firebaseRepository.getAlterationStatus()) { skills, status ->
+            skills.mapValues { entry: Map.Entry<String, List<Skill>> ->
+                val executor = ScriptExecutor(
+                    character = entry.key,
+                    alterations = status,
+                )
+                entry.value.filter { it.script == null || it.script.predicate(executor) }
+            }
+        }.stateIn(
+            scope = CoroutineScope(Dispatchers.Default + Job()),
+            started = SharingStarted.Lazily,
+            initialValue = emptyMap()
+        )
 
     var lastSuccessFullUpdate: Update = Update.INITIAL
         private set
@@ -35,7 +57,6 @@ class SkillRepository @Inject constructor(
                 sheet = request.execute(),
                 charactersSheets = characters,
             )
-
             _skills.emit(skills)
             lastSuccessFullUpdate = Update.currentTime()
         }
diff --git a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SpellRepository.kt b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SpellRepository.kt
index 5415ba4..f8451bd 100644
--- a/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SpellRepository.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/data/repository/character/SpellRepository.kt
@@ -6,12 +6,20 @@ import com.pixelized.rplexicon.data.parser.spell.AssignedSpellParser
 import com.pixelized.rplexicon.data.parser.spell.SpellBookParser
 import com.pixelized.rplexicon.data.repository.CharacterBinder
 import com.pixelized.rplexicon.data.repository.GoogleSheetServiceRepository
+import com.pixelized.rplexicon.data.repository.authentication.FirebaseRepository
+import com.pixelized.rplexicon.script.ScriptExecutor
 import com.pixelized.rplexicon.utilitary.Update
 import com.pixelized.rplexicon.utilitary.exceptions.IncompatibleSheetStructure
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.stateIn
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -20,11 +28,25 @@ class SpellRepository @Inject constructor(
     private val googleRepository: GoogleSheetServiceRepository,
     private val spellBookParser: SpellBookParser,
     private val assignedSpellParser: AssignedSpellParser,
+    firebaseRepository: FirebaseRepository,
 ) {
     private var _spellsBook = MutableStateFlow<List<Spell>>(emptyList())
     val spellsBook: StateFlow<List<Spell>> get() = _spellsBook
     private val _spells = MutableStateFlow<Map<String, List<AssignedSpell>>>(emptyMap())
-    val spells: StateFlow<Map<String, List<AssignedSpell>>> get() = _spells
+    val spells: StateFlow<Map<String, List<AssignedSpell>>> =
+        combine(_spells, firebaseRepository.getAlterationStatus()) { spells, status ->
+            spells.mapValues { entry: Map.Entry<String, List<AssignedSpell>> ->
+                val executor = ScriptExecutor(
+                    character = entry.key,
+                    alterations = status,
+                )
+                entry.value.filter { it.script == null || it.script.predicate(executor) }
+            }
+        }.stateIn(
+            scope = CoroutineScope(Dispatchers.Default + Job()),
+            started = SharingStarted.Lazily,
+            initialValue = emptyMap()
+        )
 
     var lastSuccessFullUpdate: Update = Update.INITIAL
         private set
@@ -34,7 +56,7 @@ class SpellRepository @Inject constructor(
     }
 
     fun findAssignedSpell(character: String?): List<AssignedSpell>? {
-        return character?.let { _spells.value[it] }
+        return character?.let { spells.value[it] }
     }
 
     fun findAssignedSpell(character: String?, spell: String): AssignedSpell? {
diff --git a/app/src/main/java/com/pixelized/rplexicon/script/Script.kt b/app/src/main/java/com/pixelized/rplexicon/script/Script.kt
index 7ec07be..8b8e1f9 100644
--- a/app/src/main/java/com/pixelized/rplexicon/script/Script.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/script/Script.kt
@@ -1,6 +1,6 @@
 package com.pixelized.rplexicon.script
 
-import com.pixelized.rplexicon.data.model.alteration.Alteration
+import com.pixelized.rplexicon.data.model.alteration.AlterationStatus
 
 sealed class Script(
     val predicate: ScriptExecutor.() -> Boolean
@@ -36,7 +36,7 @@ sealed class Script(
     class ACTIVE(
         val alteration: String,
     ) : Script(predicate = {
-        alterations.any { it.name == alteration }
+        alterations[AlterationStatus.Key(character, alteration)]?.value == true
     }) {
         override fun toString(): String {
             return "ACTIVE('$alteration')"
@@ -46,7 +46,9 @@ sealed class Script(
     class ANY(
         val alteration: String,
     ) : Script(predicate = {
-        alterations.any { it.name.contains(alteration) }
+        alterations.any { entry ->
+            entry.key.character == character && entry.key.alteration.contains(alteration) && entry.value.value
+        }
     }) {
         override fun toString(): String {
             return "ANY('$alteration')"
@@ -56,7 +58,7 @@ sealed class Script(
     class NOT(
         val alteration: String,
     ) : Script(predicate = {
-        alterations.none { it.name == alteration }
+        alterations[AlterationStatus.Key(character, alteration)]?.value != true
     }) {
         override fun toString(): String {
             return "NOT('$alteration')"
@@ -66,7 +68,9 @@ sealed class Script(
     class NONE(
         val alteration: String,
     ) : Script(predicate = {
-        alterations.none { it.name.contains(alteration) }
+        alterations.none { entry ->
+            entry.key.character == character && entry.key.alteration.contains(alteration) && entry.value.value
+        }
     }) {
         override fun toString(): String {
             return "NONE('$alteration')"
@@ -77,12 +81,17 @@ sealed class Script(
 }
 
 class ScriptExecutor(
-    val alterations: List<Alteration>,
+    val character: String,
+    val alterations: Map<AlterationStatus.Key, AlterationStatus.Value>,
 )
 
 fun scriptExecutor(
-    alterations: List<Alteration>,
+    character: String,
+    alterations: Map<AlterationStatus.Key, AlterationStatus.Value>,
     block: ScriptExecutor.() -> Boolean
 ): Boolean {
-    return ScriptExecutor(alterations = alterations).run(block)
+    return ScriptExecutor(
+        character = character,
+        alterations = alterations,
+    ).run(block)
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pixelized/rplexicon/script/ScriptParser.kt b/app/src/main/java/com/pixelized/rplexicon/script/ScriptParser.kt
index 31ff0a2..6c4ae58 100644
--- a/app/src/main/java/com/pixelized/rplexicon/script/ScriptParser.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/script/ScriptParser.kt
@@ -1,6 +1,8 @@
 package com.pixelized.rplexicon.script
 
-class ScriptParser {
+import javax.inject.Inject
+
+class ScriptParser @Inject constructor() {
     companion object {
         private val FUNCTION_REGEX = Regex("""^(\w+)\((?:(.*);(.*)|(.*))\)$""")
 
diff --git a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/actions/AttacksViewModel.kt b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/actions/AttacksViewModel.kt
index 593320c..4ac53ac 100644
--- a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/actions/AttacksViewModel.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/actions/AttacksViewModel.kt
@@ -43,7 +43,7 @@ class AttacksViewModel @Inject constructor(
         viewModelScope.launch(Dispatchers.Default) {
             val struct = ActionStruct()
             characterRepository.data
-                .combine(actionRepository.data) { characters, actions ->
+                .combine(actionRepository.actions) { characters, actions ->
                     struct.character = characters[character]
                     struct.actions = actions[character] ?: emptyList()
                 }
diff --git a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationPage.kt b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationPage.kt
index f78870c..485da36 100644
--- a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationPage.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationPage.kt
@@ -1,4 +1,3 @@
-
 package com.pixelized.rplexicon.ui.screens.character.pages.alteration
 
 import android.content.res.Configuration.UI_MODE_NIGHT_NO
@@ -80,7 +79,10 @@ fun AlterationPageContent(
                 )
             }
 
-            items(items = group.alterations) { alteration ->
+            items(
+                items = group.alterations,
+                key = { "${group.name}-${it.label}" },
+            ) { alteration ->
                 AlterationItem(
                     modifier = Modifier.fillMaxWidth(),
                     alteration = alteration,
diff --git a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationViewModel.kt b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationViewModel.kt
index 03de052..61113bf 100644
--- a/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationViewModel.kt
+++ b/app/src/main/java/com/pixelized/rplexicon/ui/screens/character/pages/alteration/AlterationViewModel.kt
@@ -94,7 +94,7 @@ class AlterationViewModel @Inject constructor(
         )
     }
 
-    suspend fun showAlterationDetail(id: String) {
+    fun showAlterationDetail(id: String) {
         val alteration = alterationRepository.getAssignedAlterationSnapshot(
             character = character,
             alteration = id,