Climbing the mountain pass in winter has proved as treacherous as you imagined. Yet, your party forged on because the barony needed to be saved and you were the only one to do it. The elf scouted up ahead, but now they've disappeared amid all the white. What could have happened to them? Fanning out to search, you ran across a splotch of reddened snow... and then the pure white snow next to it came tumbling down with icy tendrils flailing. Ok, maybe this was to be much more treacherous than you imagined. Roll for Initiative.

One of the oddest mimic variations, this mimic adapted to a harsh environment where winter runs long and deep. Even though the mimic became immune to the cold, It found that it stood out amid the all the white no matter what object it pretended to be. Its presence struck prey as being 'off' and with the pickings already slim, the mimic began to starve. Then, it struck on an idea, what if it could be snow itself. Once it figured this feat out, the monstrosity's luck turned. It used its newfound guise to perfect new avenues of attack and has become not just an ambush predator on the ice but an apex one as well. However, it cannot sustain itself anywhere save where the snow is thick.

Drifting Mimic

Large Monstrosity (shapechanger), neutral

Armor Class 16 (natural armor)

Hit Points 93 (11d10 + 33)

Speed 15 ft

Str 15 Dex 18 Con 17 Int 7 Wis 15 Cha 8

SkillsNature+1, Stealth +10

Damage Immunities acid, cold

Condition Immunities prone

Sensesdarkvision 60 ft, passive Perception 12

Languages -

Challenge 5 (1,800 XP)

Shapechanger.

The mimic can use its action to polymorph into a snow pile or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Adhesive (Object Form Only).

The mimic adheres to anything that touches it. A Huge or smaller creature adhered to the mimic is also grappled by it (escape DC 15). Ability checks made to escape this grapple have disadvantage.

Avalanche (Object Form Only).

If the mimic moves at least 10 ft. straight toward a target and then hits it with a bite attack on the same turn, the target takes an extra 9 (2d8) cold damage. If the target is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone. If a creature is knocked prone, the mimic automatically moves into its square and the creature is subject to the mimic's adhesive ability.

False Appearance (Object Form Only).

While the mimic remains motionless, it is indistinguishable from an ordinary yoke. Flakey (Object Form Only). In object form the mimic becomes immune to the petrified and restrained conditions. However, it cannot take Reactions.

Grappler.

The mimic has advantage on attack rolls against any creature grappled by it.

Actions

Multiattack.

The mimic makes two pseudopod attacks.

Pseudopod.

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) bludgeoning damage and 4(1d8) cold damage. If the mimic is in object form, the target is subjected to its Adhesive trait.

Bite.

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage plus 9 (2d8) acid damage

Snow Globe (Recharge 6).

The mimic explodes on a blizzard of snowflakes and lashing pseudopods in a radius of 10ft. All creatures in the area of effect must succeed on a DC 15 Dexterity save or take 9(2d8) bludgeoning damage and 9 (2d8) cold damage. Any creature that fails this save by 5 or more is subject to the mimic's adhesive trait and pulled adjacent to the mimic.