Entity Documentation - minecraft:mob_effect

A component that applies a mob effect to entities that get within range.

Mob Effect Properties

Name	Default Value	Type	Description	Example Values
cooldown_time	0	Integer number	Time in seconds to wait between each application of the effect.	Warden: 6
effect_range	0.2	Decimal number	How close a hostile entity must be to have the mob effect applied.	Pufferfish: 0.2, Warden: 20
effect_time	10	Integer number	How long the applied mob effect lasts in seconds. Can also be set to "infinite"	Pufferfish: 10, Warden: 13
entity_filter	not set	Minecraft filter	The set of entities that are valid to apply the mob effect to.	Pufferfish: {"any_of":[{"all_of":[{"test":"is_family","subject":"other","value":"mob"},{"any_of":[{"test":"is_family","subject":"other","value":"axolotl"},{"all_of":[{"test":"is_family","subject":"other","operator":"not","value":"aquatic"},{"test":"is_family","subject":"other","operator":"not","value":"undead"}]}]}]},{"all_of":[{"test":"is_family","subject":"other","value":"player"},{"test":"has_ability","subject":"other","operator":"not","value":"instabuild"}]}]}, Warden: {"all_of":[{"test":"is_family","subject":"other","value":"player"},{"operator":"not","test":"has_ability","subject":"other","value":"invulnerable"}]}
mob_effect	not set	String	The mob effect that is applied to entities that enter this entities effect range.	Pufferfish: "poison", Warden: "darkness"

Samples

Pufferfish

"minecraft:mob_effect": {
  "effect_range": 0.2,
  "mob_effect": "poison",
  "effect_time": 10,
  "entity_filter": {
    "any_of": [
      {
        "all_of": [
          {
            "test": "is_family",
            "subject": "other",
            "value": "mob"
          },
          {
            "any_of": [
              {
                "test": "is_family",
                "subject": "other",
                "value": "axolotl"
              },
              {
                "all_of": [
                  {
                    "test": "is_family",
                    "subject": "other",
                    "operator": "not",
                    "value": "aquatic"
                  },
                  {
                    "test": "is_family",
                    "subject": "other",
                    "operator": "not",
                    "value": "undead"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "all_of": [
          {
            "test": "is_family",
            "subject": "other",
            "value": "player"
          },
          {
            "test": "has_ability",
            "subject": "other",
            "operator": "not",
            "value": "instabuild"
          }
        ]
      }
    ]
  }
}

Warden

"minecraft:mob_effect": {
  "effect_range": 20,
  "effect_time": 13,
  "mob_effect": "darkness",
  "cooldown_time": 6,
  "entity_filter": {
    "all_of": [
      {
        "test": "is_family",
        "subject": "other",
        "value": "player"
      },
      {
        "operator": "not",
        "test": "has_ability",
        "subject": "other",
        "value": "invulnerable"
      }
    ]
  }
}