Sources
CR
Type
Size
Alignment
Movement

Poison Weird

Large Elemental, Neutral

Armor Class 13
Hit Points 58 (9d10 + 9)
Speed 0 ft., swim 60 ft.
STR
17
+3
DEX
16
+3
CON
13
+1
INT
11
+0
WIS
10
+0
CHA
10
+0
Damage Resistances fire; bludgeoning, piercing, slashing, from nonmagical attacks
Damage Immunities poison
Condition Immunities Exhaustion, Grappled, Paralyzed, Poisoned, Restrained, Prone, Unconscious
Senses blindsight 30 ft., passive Perception 10
Languages understands Aquan but doesn't speak
Challenge 4 (1,100 XP)

Traits

Invisible in Water. The weird is invisible while fully immersed in toxic brew.

Brew Bound. The weird dies if forced to leave the basin of toxic brew it inhabits, or if a purify food and drink spell is cast on the brew.

Poisonous Body. A creature takes 10 (3d6) poison damage at the start of each of its turns while grappled by a poison weird.

Actions

Constrict. Melee Weapon Attack: +5 to hit, reach 10 ft., one creature. Hit:13 (3d6 + 3) bludgeoning damage. If the target is Medium or smaller, it is grappled (escape DC 13) and pulled 5 feet toward the poison weird. Until this grapple ends, the target is restrained, the poison weird tries to drown it, and the poison weird can't constrict another target.