Overpowered Mobs

Overpowered mobs are naturally spawning variants of the following mobs:
Zombie, Spider, Skeleton, Phantom, Drowned, Piglin, Stray, Shulker, Husk

They can spawn with the following effects:
Speed: has effect Speed.
Strength: has effect Strength.
Leaping: has effect Jump Boost.
Invisibility: has effect Invisibility.
Degradation: afflicts Wither towards players.
Blindness: afflicts Blindness towards players.
Crippling: afflicts Slowness towards players.
Longevity: has 300 health points.

The chance of a mob spawning with a special variant is 3% for phantoms and 5% for all other mobs