Corruption

Dark Taint. Any creature that touches the corruption or hits it with a melee attack must succeed on a dc15 constitution saving throw, or be infected by the dark taint. The dark taint is a disease spread by the corruption. A creature infected by the dark taint suffers 1 level of exhaustion an hour, and their skin turns a blotchy black. Also, at the start of every turn, unless the creature is immune to necrotic damage, it must make a dc10 constitution saving throw. The creature loses 2 hp on a failed save, and takes no damage on a successful one.

Amorphous. The corruption can fit through a 1 milimeter crack without squeezing.

Corrupt. The corruption reaches out to touch a random creature within 5 ft., using its dark taint ability. The targeted creature must make a dc10 dexterity saving throw or be subjected to the dark taint.

Petrify. The corruption wraps itself around a target's entire body. that creature must make a dc30 strength saving throw or become petrified. On a failed save, the corruption drops to 0 hit points and remains stuck on the creature's body. It can be torn off of the creature with a successful dc20 strength (athletics) check. on a successful save, the Corruption drops to half current hp and is stunned for 1 turn.

Pseudopod. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit: 9 (2d6 + 2) Bludgeoning damage, plus 2 (1d4) acid damage.