Mustard Jelly

Large ooze, unaligned

Armor Class

14 (natural armor)

Hit Points

136 (13d10 + 65)

Speed

30 ft.

STR

15 (+2)

DEX

10 (+0)

CON

21 (+5)

INT

10 (+0)

WIS

10 (+0)

CHA

10 (+0)

Damage Immunities

force, lightning, poison

Damage Resistances

cold

Condition Immunities

blinded, charmed, deafened, exhaustion, frightened, poisoned

Senses

blindsight 60 ft. (blind beyond this radius), passive Perception 16

Skills

Perception +6, Stealth +6

Languages

Challenge

6 (2,300 XP)

Amorphous. The jelly can move through a space as narrow as 1 inch wide without squeezing.

Energy Absorption. A mustard jelly is immune to force and lightning damage. If the jelly would have taken force or lightning damage, it is instead healed for the same amount it would have taken in damage.

Magic Weapons. The jelly’s attacks are magical.

Spider Climb. The jelly can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Poison Aura. At the start of each of the jelly’s turns, each creature within 10 feet of it takes 10 (3d6) poison damage. A creature that touches the jelly or hits it with a melee attack while within 5 feet of it takes 10 (3d6) poison damage.

Actions

Pseudopod. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 (3d6 + 2) bludgeoning damage and 10 (3d6) acid damage.