Rot Troll

Mordenkainen's Tome of Foes p. 244,

Size
Large
Type
giant
Alignment
chaotic evil
AC
16 (natural armor)
Hit Points
138 (12d10+72)
Speed
walk 30 ft.
Skills
Perception +3
Immunities
necrotic
Senses
darkvision 60 ft.
Passive Perception
13
Languages
Giant
Challenge
9
Lineage
Troll
Environment
desert, forest, swamp, underdark
STR
18
+4
DEX
13
+1
CON
22
+6
INT
5
−3
WIS
8
−1
CHA
4
−3

Traits

Rancid Degeneration

At the end of each of the troll's turns, each creature within 5 feet of it takes 11 (2d10) necrotic damage, unless the troll has taken acid or fire damage since the end of its last turn.

Actions

Multiattack

The troll makes three attacks: one with its bite and two with its claws.

Bite

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) piercing damage plus 16 (3d10) necrotic damage.

Claws

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage plus 5 (1d10) necrotic damage.

Other data

description

Rot Troll. A troll that is infused with waves of necrotic energy as it regenerates can develop a symbiotic relationship with that deathly power. The troll's body withers, and its flesh falls away from the body as quickly as it forms. Eventually a rot troll becomes unable to regenerate, though it still heals normally. The creature courses with necrotic energy that flows out of its withered form. Simply standing near a rot troll exposes other creatures to its lethal emanations.

Trolls: Trolls that are nearly obliterated but survive and regenerate from mere scraps of flesh can display bizarre mutations. One of these warped trolls is especially likely to arise if the creature regenerates in the presence of magical emanations, planar energy, disease, or death on a vast scale, or if its body was damaged by elemental forces. These mutated forms can also be produced and shaped by the ritual magic of evil spellcasters.