dealdamage (task type)
Since v2.2
Deal a certain amount of damage.
Options
| Key | Description | Type | Required | Default | Notes | 
|---|---|---|---|---|---|
amount |  The amount of damage needed. | Integer | Yes | - | Damage is measured in HP, 1 heart = 2 HP. A player has 20 HP by default, with no status effects applied. | 
allow-only-creatures |  Whether the entity must be a creature. | Boolean | No | True | - | 
mob / mobs |  The specific mob(s) to deal damage to. | Entity type, or list of entity types | No | - | Not specifying this field will allow all mob types to count towards the task. Please see this list for entity types. | 
item |  Specific item which should be used to deal damage. | ItemStack | No | - | Accepts standard item definition. | 
data |  The data code for the item. | Integer | No | 0 | This field is not used in Minecraft versions 1.13+, nor is it compatible with ItemStack definitions. | 
exact-match |  Whether the item should exactly match what is defined. | Boolean | No | true | - | 
worlds |  Worlds which should count towards the progress. | List of world names | No | - | - | 
It’s not possible to use item option for projectile weapons (like bow or other projectile shooters). Currently, the API is insufficient to implement such a feature without any unwanted side effects.
Examples
Deal 100 HP of damage:
dealdamage:
  type: "dealdamage"
  amount: 100                           # amount of damage inflicted (HP)
  worlds:                               # (OPTIONAL) restrict to certain worlds
   - "world"