Crimson slime

Semi-solid. the slime can fit through tight spaces at least 0.3 mm wide

Absorb. Engulfs an entity smaller than itself, dealing acid damage till it breaks free or dies, healing itself for how much hitpoints the enemy had, If it overheals it will add a quater of the ammount of health it didn't heal to it's max health. To be set free the enemy will have to roll a dex check and hit over 15.

Slimy slam. Melee Weapon Attack: +2 to hit, reach 3 ft., single target. Hit: 5 (1d6 + 1) acid damage. 

Crystal shard. Ranged Weapon Attack: +2 to hit, range 5/30 ft., single target. Hit: 5 (1d6 + 1) piercing damage.

Split If the slime happens to grow to twice it's size/max health it will split into 2 slimes with normal size

Absorb (passive): If a slime absorbs a certain amount of certain objects it can gain qualities of said object.

Mimic: A slime can mimic the shapes of tiny-medium creatures raising charisma and giving the illusion it is freindly.

no more control. When the crimson crystal is destroyed it reverts back to whatever slime it was before corruption