diff --git a/app/imports/api/creature/creatureProperties/methods/damageProperty.js b/app/imports/api/creature/creatureProperties/methods/damageProperty.js
deleted file mode 100644
index e1a61f33..00000000
--- a/app/imports/api/creature/creatureProperties/methods/damageProperty.js
+++ /dev/null
@@ -1,139 +0,0 @@
-import { ValidatedMethod } from 'meteor/mdg:validated-method';
-import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import SimpleSchema from 'simpl-schema';
-import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties';
-import { assertEditPermission } from '/imports/api/sharing/sharingPermissions';
-
-const damageProperty = new ValidatedMethod({
-  name: 'creatureProperties.damage',
-  validate: new SimpleSchema({
-    _id: SimpleSchema.RegEx.Id,
-    operation: {
-      type: String,
-      allowedValues: ['set', 'increment']
-    },
-    value: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 20,
-    timeInterval: 5000,
-  },
-  run({ _id, operation, value }) {
-
-    // Get action context
-    let prop = CreatureProperties.findOne(_id);
-    if (!prop) throw new Meteor.Error(
-      'Damage property failed', 'Property doesn\'t exist'
-    );
-    const creatureId = prop.root.id;
-    const actionContext = new ActionContext(creatureId, [creatureId], this);
-
-    // Check permissions
-    assertEditPermission(actionContext.creature, this.userId);
-
-    // Check if property can take damage
-    let schema = CreatureProperties.simpleSchema(prop);
-    if (!schema.allowsKey('damage')) {
-      throw new Meteor.Error(
-        'Damage property failed',
-        `Property of type "${prop.type}" can't be damaged`
-      );
-    }
-
-    // Replace the prop by its actionContext counterpart if possible
-    if (prop.variableName) {
-      const actionContextProp = actionContext.scope[prop.variableName];
-      if (actionContextProp?._id === prop._id) {
-        prop = actionContextProp;
-      }
-    }
-
-    const result = damagePropertyWork({ prop, operation, value, actionContext });
-
-    // Insert the log
-    actionContext.writeLog();
-    return result;
-  },
-});
-
-export function damagePropertyWork({ prop, operation, value, actionContext, logFunction = undefined }) {
-
-  // Save the value to the scope before applying the before triggers
-  if (operation === 'increment') {
-    if (value >= 0) {
-      actionContext.scope['~damage'] = { value };
-    } else {
-      actionContext.scope['~healing'] = { value: -value };
-    }
-  } else {
-    actionContext.scope['~set'] = { value };
-  }
-
-  applyTriggers(actionContext.triggers?.damageProperty?.before, prop, actionContext);
-
-  // fetch the value from the scope after the before triggers, in case they changed them
-  if (operation === 'increment') {
-    if (value >= 0) {
-      value = actionContext.scope['~damage']?.value;
-    } else {
-      value = -actionContext.scope['~healing']?.value;
-    }
-  } else {
-    value = actionContext.scope['~set']?.value;
-  }
-
-  let damage, newValue, increment;
-  if (operation === 'set') {
-    const total = prop.total || 0;
-    // Set represents what we want the value to be after damage
-    // So we need the actual damage to get to that value
-    damage = total - value;
-    // Damage can't exceed total value
-    if (damage > total && !prop.ignoreLowerLimit) damage = total;
-    // Damage must be positive
-    if (damage < 0 && !prop.ignoreUpperLimit) damage = 0;
-    newValue = prop.total - damage;
-    // Write the results
-    CreatureProperties.update(prop._id, {
-      $set: { damage, value: newValue, dirty: true }
-    }, {
-      selector: prop
-    });
-    // Also write it straight to the prop so that it is updated in the actionContext
-    prop.damage = damage;
-    prop.value = newValue;
-    logFunction?.(newValue);
-  } else if (operation === 'increment') {
-    let currentValue = prop.value || 0;
-    let currentDamage = prop.damage || 0;
-    increment = value;
-    // Can't increase damage above the remaining value
-    if (increment > currentValue && !prop.ignoreLowerLimit) increment = currentValue;
-    // Can't decrease damage below zero
-    if (-increment > currentDamage && !prop.ignoreUpperLimit) increment = -currentDamage;
-    damage = currentDamage + increment;
-    newValue = prop.total - damage;
-    // Write the results
-    CreatureProperties.update(prop._id, {
-      $inc: { damage: increment, value: -increment },
-      $set: { dirty: true },
-    }, {
-      selector: prop
-    });
-    // Also write it straight to the prop so that it is updated in the actionContext
-    prop.damage += increment;
-    prop.value -= increment;
-    logFunction?.(increment);
-  }
-
-  applyTriggers(actionContext.triggers?.damageProperty?.after, prop, actionContext);
-
-  if (operation === 'set') {
-    return damage;
-  } else if (operation === 'increment') {
-    return increment;
-  }
-}
-
-export default damageProperty;
diff --git a/app/imports/api/engine/action/functions/applyTaskGroups.ts b/app/imports/api/engine/action/functions/applyTaskGroups.ts
index ca0d3d1e..098afd0b 100644
--- a/app/imports/api/engine/action/functions/applyTaskGroups.ts
+++ b/app/imports/api/engine/action/functions/applyTaskGroups.ts
@@ -131,7 +131,7 @@ export async function applyAfterPropTasksForSomeChildren(
 export async function applyTriggers(
   action: EngineAction, prop, targetIds: string[], triggerPath: string, inputProvider: InputProvider
 ) {
-  const triggerIds = get(prop?.triggerIds, triggerPath);
+  const triggerIds = get(prop, triggerPath);
   if (!triggerIds) return;
   for (const triggerId of triggerIds) {
     const trigger = await getSingleProperty(action.creatureId, triggerId);
diff --git a/app/imports/api/engine/action/methods/doCastSpell.js b/app/imports/api/engine/action/methods/doCastSpell.js
index c2e1f957..f15696cb 100644
--- a/app/imports/api/engine/action/methods/doCastSpell.js
+++ b/app/imports/api/engine/action/methods/doCastSpell.js
@@ -7,7 +7,6 @@ import {
 } from '/imports/api/engine/loadCreatures';
 import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties';
 import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions';
-import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty';
 
 // TODO Migrate this to the new action engine
 
diff --git a/app/imports/api/engine/action/tasks/applyCheckTask.ts b/app/imports/api/engine/action/tasks/applyCheckTask.ts
index 11fa54f0..b8f32e39 100644
--- a/app/imports/api/engine/action/tasks/applyCheckTask.ts
+++ b/app/imports/api/engine/action/tasks/applyCheckTask.ts
@@ -1,10 +1,10 @@
-import { applyDefaultAfterPropTasks } from '/imports/api/engine/action/functions/applyTaskGroups';
+import { applyTriggers } from '/imports/api/engine/action/functions/applyTaskGroups';
 import { CheckTask } from '/imports/api/engine/action/tasks/Task';
 import { EngineAction } from '/imports/api/engine/action/EngineActions';
 import { getEffectiveActionScope } from '/imports/api/engine/action/functions/getEffectiveActionScope';
 import { getFromScope } from '/imports/api/creature/creatures/CreatureVariables';
 import { getVariables } from '/imports/api/engine/loadCreatures';
-import InputProvider, { CheckParams } from '/imports/api/engine/action/functions/userInput/InputProvider';
+import InputProvider from '/imports/api/engine/action/functions/userInput/InputProvider';
 import numberToSignedString from '/imports/api/utility/numberToSignedString';
 import TaskResult from '/imports/api/engine/action/tasks/TaskResult';
 
@@ -38,6 +38,17 @@ export default async function applyCheckTask(
     const ability = checkParams.abilityVariableName && getFromScope(checkParams.abilityVariableName, scope) || null;
     const abilityModifier = ability?.modifier || 0;
 
+
+    // Run the before triggers which may change scope properties
+    if (skill) await applyTriggers(action, skill, [targetId], 'checkTriggerIds.before', userInput);
+    if (ability) await applyTriggers(action, ability, [targetId], 'checkTriggerIds.before', userInput);
+
+    if (skill || ability) {
+      // Create a new result after before triggers have run
+      result = new TaskResult(task.prop._id, task.targetIds);
+      action.results.push(result);
+    }
+
     const totalModifier = skillBonus + abilityModifier;
     const rollModifierText = numberToSignedString(totalModifier);
 
@@ -100,9 +111,15 @@ export default async function applyCheckTask(
       inline: true,
       ...prop?.silent && { silenced: prop.silent }
     }, [targetId]);
-  }
 
-  return applyDefaultAfterPropTasks(action, prop, targetIds, userInput);
+    // After check triggers
+    if (skill) await applyTriggers(action, skill, [targetId], 'checkTriggerIds.after', userInput);
+    if (ability) await applyTriggers(action, ability, [targetId], 'checkTriggerIds.after', userInput);
+
+    // After children check triggers
+    if (skill) await applyTriggers(action, skill, [targetId], 'checkTriggerIds.afterChildren', userInput);
+    if (ability) await applyTriggers(action, ability, [targetId], 'checkTriggerIds.afterChildren', userInput);
+  }
 }
 
 // TODO set these and potentially read them again if triggers can change them
diff --git a/app/imports/api/engine/action/tasks/applyDamagePropTask.ts b/app/imports/api/engine/action/tasks/applyDamagePropTask.ts
index 15012c7a..e7dada77 100644
--- a/app/imports/api/engine/action/tasks/applyDamagePropTask.ts
+++ b/app/imports/api/engine/action/tasks/applyDamagePropTask.ts
@@ -42,7 +42,7 @@ export default async function applyDamagePropTask(
   }
 
   // Run the before triggers which may change scope properties
-  await applyTriggers(action, targetProp, [action.creatureId], 'before', userInput);
+  await applyTriggers(action, targetProp, [targetId], 'damageTriggerIds.before', userInput);
 
   // Create a new result after triggers have run
   result = new TaskResult(task.prop._id, task.targetIds);
@@ -136,8 +136,8 @@ export default async function applyDamagePropTask(
     });
     setScope(result, targetProp, newValue, damage);
   }
-  await applyTriggers(action, targetProp, [action.creatureId], 'after', userInput);
-  await applyTriggers(action, targetProp, [action.creatureId], 'afterChildren', userInput);
+  await applyTriggers(action, targetProp, [targetId], 'damageTriggerIds.after', userInput);
+  await applyTriggers(action, targetProp, [targetId], 'damageTriggerIds.afterChildren', userInput);
   return increment;
 }
 
diff --git a/app/imports/api/engine/action/tasks/applyItemAsAmmoTask.ts b/app/imports/api/engine/action/tasks/applyItemAsAmmoTask.ts
index 092b6321..fd57645b 100644
--- a/app/imports/api/engine/action/tasks/applyItemAsAmmoTask.ts
+++ b/app/imports/api/engine/action/tasks/applyItemAsAmmoTask.ts
@@ -22,7 +22,11 @@ export default async function applyItemAsAmmoTask(task: ItemAsAmmoTask, action:
   result.pushScope = { ['~ammoConsumed']: { value } };
 
   // Apply the before triggers
-  await applyTriggers(action, item, [action.creatureId], 'ammo.before', userInput);
+  await applyTriggers(action, item, task.targetIds, 'ammoTriggerIds.before', userInput);
+
+  // Create a new result after before triggers have run
+  result = new TaskResult(task.prop._id, task.targetIds);
+  action.results.push(result);
 
   // Refetch the scope properties
   const scope = await getEffectiveActionScope(action);
@@ -52,11 +56,12 @@ export default async function applyItemAsAmmoTask(task: ItemAsAmmoTask, action:
     },
   });
 
-  await applyTriggers(action, item, [action.creatureId], 'ammo.after', userInput);
+  await applyTriggers(action, item, task.targetIds, 'ammoTriggerIds.after', userInput);
 
   if (task.params.skipChildren) {
-    return applyAfterTasksSkipChildren(action, item, task.targetIds, userInput);
+    await applyAfterTasksSkipChildren(action, item, task.targetIds, userInput);
   } else {
-    return applyDefaultAfterPropTasks(action, item, task.targetIds, userInput);
+    await applyDefaultAfterPropTasks(action, item, task.targetIds, userInput);
   }
+  return applyTriggers(action, item, task.targetIds, 'ammoTriggerIds.afterChildren', userInput);
 }
\ No newline at end of file
diff --git a/app/imports/api/engine/computation/computeComputation/computeByType/computeTrigger.js b/app/imports/api/engine/computation/computeComputation/computeByType/computeTrigger.js
index 268de44a..f80e6f13 100644
--- a/app/imports/api/engine/computation/computeComputation/computeByType/computeTrigger.js
+++ b/app/imports/api/engine/computation/computeComputation/computeByType/computeTrigger.js
@@ -9,31 +9,40 @@ export default function computeTrigger(computation, node) {
 
   // Link triggers to all the properties that would fire them when applied
   const tagTargets = getEffectTagTargets(prop, computation);
-  switch (prop.event) {
-    case 'doActionProperty':
-      tagTargets.forEach(targetId => {
-        const targetProp = computation.propsById[targetId];
+  for (const targetId of tagTargets) {
+    const targetProp = computation.propsById[targetId];
+    switch (prop.event) {
+      case 'doActionProperty':
         // Only apply if the trigger matches this property type
-        if (targetProp.type !== prop.actionPropertyType) return;
-        setTrigger(prop, targetProp);
-      });
-      break;
-    case 'damageProperty':
-      tagTargets.forEach(targetId => {
-        const targetProp = computation.propsById[targetId];
+        if (targetProp.type === prop.actionPropertyType) {
+          setTrigger(prop, targetProp, 'triggerIds');
+        }
+        // Or on an item used as ammo
+        else if (prop.actionPropertyType === 'ammo' && targetProp.type === 'item') {
+          setTrigger(prop, targetProp, 'ammoTriggerIds');
+        }
+        break;
+      case 'damageProperty':
         // Only apply to attributes
-        if (targetProp.type !== 'attribute') return;
-        setTrigger(prop, targetProp);
-      });
-      break;
+        if (targetProp.type === 'attribute') {
+          setTrigger(prop, targetProp, 'damageTriggerIds');
+        }
+        break;
+      case 'check':
+        // Only apply to attributes and skills
+        if (targetProp.type === 'attribute' || targetProp.type === 'skill') {
+          setTrigger(prop, targetProp, 'checkTriggerIds');
+        }
+        break;
+    }
   }
 }
 
-function setTrigger(prop, targetProp) {
-  let triggerIdArray = get(targetProp, `triggerIds.${prop.timing}`);
+function setTrigger(prop, targetProp, field = 'triggerIds') {
+  let triggerIdArray = get(targetProp, `${field}.${prop.timing}`);
   if (!triggerIdArray) {
     triggerIdArray = [];
-    set(targetProp, `triggerIds.${prop.timing}`, triggerIdArray);
+    set(targetProp, `${field}.${prop.timing}`, triggerIdArray);
   }
   triggerIdArray.push(prop._id);
 }
\ No newline at end of file
diff --git a/app/imports/api/properties/Attributes.ts b/app/imports/api/properties/Attributes.ts
index 9cb99fa7..88d0fcae 100644
--- a/app/imports/api/properties/Attributes.ts
+++ b/app/imports/api/properties/Attributes.ts
@@ -280,9 +280,69 @@ const ComputedOnlyAttributeSchema = createPropertySchema({
     type: Number,
     optional: true,
   },
+  // Triggers that fire when this property is damaged
+  'damageTriggerIds': {
+    type: Object,
+    optional: true,
+    removeBeforeCompute: true,
+  },
+  'damageTriggerIds.before': {
+    type: Array,
+    optional: true,
+  },
+  'damageTriggerIds.before.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'damageTriggerIds.after': {
+    type: Array,
+    optional: true,
+  },
+  'damageTriggerIds.after.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'damageTriggerIds.afterChildren': {
+    type: Array,
+    optional: true,
+  },
+  'damageTriggerIds.afterChildren.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  // Triggers that fire when this property is used to make a check
+  'checkTriggerIds': {
+    type: Object,
+    optional: true,
+    removeBeforeCompute: true,
+  },
+  'checkTriggerIds.before': {
+    type: Array,
+    optional: true,
+  },
+  'checkTriggerIds.before.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'checkTriggerIds.after': {
+    type: Array,
+    optional: true,
+  },
+  'checkTriggerIds.after.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'checkTriggerIds.afterChildren': {
+    type: Array,
+    optional: true,
+  },
+  'checkTriggerIds.afterChildren.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
 });
 
-const ComputedAttributeSchema = new SimpleSchema()
+const ComputedAttributeSchema = new SimpleSchema({})
   .extend(ComputedOnlyAttributeSchema)
   .extend(AttributeSchema);
 
diff --git a/app/imports/api/properties/Items.ts b/app/imports/api/properties/Items.ts
index 02e0e0c9..d513b690 100644
--- a/app/imports/api/properties/Items.ts
+++ b/app/imports/api/properties/Items.ts
@@ -68,16 +68,46 @@ const ItemSchema = createPropertySchema({
     type: Boolean,
     optional: true,
   },
+  // Triggers that fire when this property is used as ammo
+  'ammoTriggerIds': {
+    type: Object,
+    optional: true,
+    removeBeforeCompute: true,
+  },
+  'ammoTriggerIds.before': {
+    type: Array,
+    optional: true,
+  },
+  'ammoTriggerIds.before.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'ammoTriggerIds.after': {
+    type: Array,
+    optional: true,
+  },
+  'ammoTriggerIds.after.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+  'ammoTriggerIds.afterChildren': {
+    type: Array,
+    optional: true,
+  },
+  'ammoTriggerIds.afterChildren.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
 });
 
-let ComputedOnlyItemSchema = createPropertySchema({
+const ComputedOnlyItemSchema = createPropertySchema({
   description: {
     type: 'computedOnlyInlineCalculationField',
     optional: true,
   },
 });
 
-const ComputedItemSchema = new SimpleSchema()
+const ComputedItemSchema = new SimpleSchema({})
   .extend(ItemSchema)
   .extend(ComputedOnlyItemSchema);