Yaga Goo

Small Ooze neutral evil

STR	DEX	CON	INT	WIS	CHA
11 (+0)	18 (+4)	20 (+5)	14 (+2)	12 (+1)	11 (+0)

Saving Throws: Wis +4
Skills: stealth +10
Damage Immunities: necrotic
Condition Immunities: blinded, charmed, deafened, exhaustion, frightened, prone
Senses: blindsight 60 ft. (blind beyond this radius), passive Perception 11
Languages: understands Common but can't speak

Amorphous: The goo can move through a space as narrow as 1 inch wide without squeezing.
Deadly to Fey: The goo has advantage on attack rolls against fey and any creature with the Fey Ancestry trait.
Spider Climb: The goo can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Multiattack: The Yaga goo makes two pseudopod attacks. When its Foul Transit is available, it can use Foul Transit in place of one pseudopod attack.
Pseudopod: Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage plus 3 (1d6) necrotic damage.
Foul Transit (Recharge 4-6): The goo teleports to an unoccupied space it can see within 50 feet, leaving behind a wretched puddle in the space it previously occupied. A creature within 5 feet of the space the goo left must succeed on a DC 16 Constitution saving throw or take 10 (3d6) necrotic damage and become poisoned until the end of its next turn. The first time a creature enters the puddle's space or if a creature starts its turn in the puddle's space it takes 10 (3d6) necrotic damage and is poisoned. The puddle lasts for 1 minute or until the goo that created it is killed.

Puddle Splash: When a creature the Yaga goo can see targets it with a melee attack while within 5 feet of the goo, the goo can teleport to a puddle created by its Foul Transit, if that puddle's space is unoccupied, negating the damage from the attack. If it does, the attacker must succeed on a DC 16 Constitution saving throw or take 10 (3d6) necrotic damage and become poisoned until the end of its next turn.