Large Ooze, unaligned
Armor Class 9
Hit Points 126 (12d10+60)
Speed fly +10, swim +20, walk +20, climb +20, hover true
Challenge 10
Damage Vulnerabilities cold
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities acid, fire, lightning
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 8
Languages -
Ambusher. The ooze has advantage on attack rolls against any creature it has surprised.
Amorphous. The ooze can move through a space as narrow as 1 inch wide without squeezing.
Lightning Storm. A creature that touches the ooze while wearing metal or hits it with a melee attack with a metal weapon takes 9 (2d8) lightning damage and triggers a lightning storm. All creatures within 20 feet of the ooze that are holding or wearing metal must succeed on a DC 16 Dexterity saving throw or take 9 (2d8) lightning damage.
Spider Climb. The ooze can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Multiattack. The foxfire ooze makes three pseudopod attacks.
Pseudopod. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 20 (3d10 + 4) bludgeoning damage plus 4 (1d8) lightning damage.
Source: Creature Codex · OGL/Open