Apply effect

saturn:apply_effect

Applies a mob effect with the given duration and amplifier to the entity.

Runs an operation on a single entity. Used in entity action fields such as entity_action and a trigger rule's action; action arrays run in order.

JSON fields

Field	Type	Required	Default	Description
type	Resource ID	yes	—	saturn:apply_effect
effect	Resource ID	yes	—	Mob effect ID.
duration_ticks	Number provider	yes	—	Effect duration, in game ticks.
amplifier	Number provider	no	0.0	Effect amplifier index; 0 means level I.

JSON example

{
  "type": "saturn:apply_effect",
  "effect": "minecraft:speed",
  "duration_ticks": 200,
  "amplifier": 0
}

This is a value to embed in the corresponding field, not a standalone loadable data pack file. The example: references in the examples must be replaced with defined entries.

Java entry point

com.iafenvoy.saturn.data.action.builtin.entity.ApplyEffectAction. This page is based on the Codec in the current 26.1.2 source.