Sources
CR
Type
Size
Alignment
Movement

Enormous Tentacle

Huge Beast, Unaligned

Armor Class 12
Hit Points 60 (8d12 + 8)
Speed 30 ft., swim 30 ft.
STR
19
+4
DEX
14
+2
CON
12
+1
INT
1
-5
WIS
10
+0
CHA
3
-4
Skills Perception +2
Senses blindsight 10 ft., passive Perception 12
Languages
Challenge 2 (450 XP)

Traits

Reach. The tentacle can reach anywhere in the room.

Actions

Constrict. Melee Weapon Attack: +6 to hit, reach 35 ft., one creature. Hit:13 (2d8 + 4) bludgeoning damage, and the target is grappled (escape DC 16). Until this grapple ends, the creature is restrained, and the tentacle can't constrict another target.