Large Ooze, unaligned
Armor Class 7
Hit Points 76 (8d10+32)
Speed swim +30, walk +20, climb +10
Challenge 3
Skills stealth +1
Damage Immunities acid, cold
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 8
Languages -
Amorphous. The purple slime can move through a space as narrow as 1 inch wide without squeezing.
Amphibious. The purple slime can breathe air and water.
Underwater Camouflage. The purple slime has advantage on Dexterity (Stealth) checks made while underwater.
Multiattack. The purple slime makes two spike attacks.
Spike. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 6 (1d8 + 2) piercing damage and 10 (3d6) poison damage. In addition, the target must succeed on a DC 14 Constitution saving throw or its Strength score is reduced by 1d4. The target dies if this reduces its Strength to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.
Source: Creature Codex · OGL/Open