Lashes with three electrified tendrils at reach and swallows one victim whole to shock it every turn.
AC
HP
Speed
CR
XP
15
110 (13d10+39)
30 ft, swim 20 ft
5
1800
STR
DEX
CON
INT
WIS
CHA
18 (+4)
8 (-1)
16 (+3)
5 (-3)
10 (+0)
5 (-3)
Skills: Stealth +3
Resistant: cold, fire
Immune: lightning
Condition immunities: deafened, exhaustion
Senses: blindsight 60 ft; passive Perception 10
Traits
Lightning Absorption. Each time the shambling mound is subjected to Lightning damage, it regains Hit Points equal to the Lightning damage dealt.
Actions
Multiattack. The shambling mound makes three Charged Tendril attacks. It can use Engulf in place of one of them.
Charged Tendril. Hit: 7 (1d6 + 4) Bludgeoning damage plus 5 (2d4) Lightning damage. If the target is Medium or smaller, the shambling mound pulls it 5 feet straight toward itself.
Engulf. Strength Saving Throw: DC 15, one Medium or smaller creature within 5 feet. Failure: the target is pulled into the shambling mound's space and has the Grappled condition (escape DC 14). While grappled this way, the target also has the Blinded and Restrained conditions and takes 10 (3d6) Lightning damage at the start of each of its turns. The grappled target moves with the shambling mound when it moves, at no extra movement cost. The mound can hold only one creature with this action at a time.