Ooze, Sinkhole

Gargantuan Ooze unaligned

STR	DEX	CON	INT	WIS	CHA
18 (+4)	5 (-3)	16 (+3)	3 (-4)	6 (-2)	1 (-5)

Saving Throws: Str +6
Skills: perception +-2
Damage Immunities: acid
Condition Immunities: blinded, charmed, deafened, exhausted, frightened, prone
Senses: blindsight 120' (blind beyond), passive Perception 8
Languages: —

Amorphous: Move through space 1ft.+ wide with o squeezing.
Hollow Cylindrical Form (Stretched Body Only): Creatures can occupy space in center of cylinder formed by the ooze and each such space is always within ooze's reach regardless of cylinder's size.
Ooze Nature: The sinkhole ooze doesn't require sleep.
Seizing Pseudopods: Can have up to 6 tendril-like Pseudopods at a time. Each can be attacked (AC 10; 10 hp; immunity to acid poison and psychic). Destroying Pseudopod deals no damage to ooze which can extrude a replacement on its next turn. Pseudopod can also be broken if creature takes an action and makes DC 14 Str check.
Slimy Appearance (Stretched Body Only): While it remains motionless is indistinguishable from interior of the pit or hole in the ground it is stretched across though interior walls appear wet.
Spider Climb: Difficult surfaces even ceilings no ability check.

Multiattack: Two Pseudopod attacks.
Pseudopod: Melee Weapon Attack: +6 to hit, 15 ft., one creature,. 9 (1d10+4) bludgeoning damage + 3 (1d6) acid and target is grappled (escape DC 14). Until this grapple ends target is restrained and takes 3 (1d6) acid at start of each of its turns and ooze can't use same Pseudopod on another target.

Stretch Body: Stretches body around inner walls of a pit sinkhole or other circular opening in the ground. Stretched this way it forms a hollow cylinder up to 25 ft. tall up to 25 ft. radius. Ooze can end stretch as a bonus action occupying nearest unoccupied space to the hole.

Pluck (Stretched Body Only): When 1+ creature falls down center of its cylinder can try to grab up to 2 of them. Each must make DC 14 Dex save or grappled (escape DC 14) in Pseudopod.