Oozing is a harmful (negative) status effect in Minecraft Java Edition 1.21.
minecraft:oozing
Give Oozing II for 60 seconds (Java Edition 1.13+; duration in seconds, then amplifier where 0 = level I):
Remove the effect from the nearest player:
Oozing makes the affected entity spawn slimes when it dies, multiplying your problems mid-fight, and it originates from slime-related attacks in trial chambers.
Oozing is applied by slime attacks connected to trial chamber spawners and their projectiles. Like its sibling effects Weaving and Infested, no potion version exists; it is chamber-specific.
Slimes splitting from an Oozing death can chain-apply the effect in chaotic fights, so focus affected mobs down at range. Milk clears it if you get tagged yourself and want no surprises.
The effect ID for Oozing is minecraft:oozing. Java Edition 1.13+ /effect commands use this namespaced form.
Run /effect give @p minecraft:oozing 60 1 to get Oozing II for 60 seconds. The first number is the duration in seconds; the second is the amplifier (0 = level I, 1 = level II). Remove it with /effect clear @p minecraft:oozing.
Oozing is a harmful (negative) status effect in Minecraft Java Edition, based on its registry category (harmful).
When the affected entity dies, it spawns slimes at its location. It appears in trial chambers through slime-related attacks and can make crowded fights snowball if ignored.
From slime attacks tied to trial chamber spawners. It is one of the four chamber-specific infestation effects alongside Wind Charged, Weaving, and Infested.