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Gloomglacier

Miners whisper of a living frozen slurry that eats pickaxes and corners men. Blacksmiths fear bringing pure iron into caverns rumored to house a gloomglacier. Alchemists prize the brittle 'frostslag' the creature leaves behind, using it in corrosive tinctures and preservation rituals.

Largeooze(ooze)CR 6 (medium)unaligned

Gloomglacier

coldacidterrain-controlenvironmental-hazard
HP102AC14SPD30 ft., climb 10 ft. (slowly)CR6 (2,300 XP)PerceptionStealth
STR
18
save
DEX
8
CON
16
save
INT
6
WIS
12
CHA
5
Glacial Resilience. The gloomglacier has advantage on saving throws against being poisoned and on checks and saves to resist being forced into a smaller space. It treats difficult cold terrain as normal terrain for itself.
Amorphous Flow. The gloomglacier can move through a space as narrow as 1 inch wide without squeezing. It can enter and occupy the same space as a creature. A creature that ends its turn in the gloomglacier's space is subject to Engulf if the gloomglacier chooses.
Shard Assimilation. When the gloomglacier finishes a short rest it regains 10 hit points for each small metal shard it has absorbed (up to 30 hit points). A creature can remove these shards with a successful Sleight of Hand or a Strength check to pry them free.
Pseudopod Slam. Melee Weapon Attack: to hit, reach 5 ft., one target. Hit: 14 () bludgeoning damage plus 7 () acid damage. If the target is a nonmagical metal object, the acid deals an extra 7 () acid damage to the object instead of the target.
Glacial Acid Cone. The gloomglacier uncoils and expels a cone of freezing, acidic ooze in a 30-foot cone. Each creature in that area must make a Dexterity saving throw, taking 31 () acid damage and 7 () cold damage on a failed save, or half as much on a success. Surfaces hit by the cone are slick with freezing ooze for 1 minute. A creature that starts its turn in the slick area or enters it for the first time on a turn must succeed on a Dexterity saving throw or fall prone.
Engulf. The gloomglacier attempts to engulf a Medium or smaller target it can reach. The target must succeed on a Strength saving throw or be engulfed. An engulfed creature is restrained, blinded, and at the start of each of the gloomglacier's turns takes 14 () acid damage and 7 () cold damage. The engulfed creature can repeat the saving throw at the end of each of its turns, escaping on a success. If the gloomglacier moves while a creature is engulfed, the creature moves with it.
Reaching Residue. When a creature within 5 feet hits the gloomglacier with a melee attack, the attacker takes 4 () acid damage as residual ooze splashes back.
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