Glacier Behemoth

Huge beast, unaligned

Armor Class 18 (natural armor)
Hit Points 172 (15d12 + 75)
Speed 20 ft., burrow 20 ft.

24 (+7) 3 (-4) 21 (+5) 4 (-3) 14 (+2) 7 (-2)

Saving Throws Con +9, Wis +6
Skills Athletics +11, Perception +6
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities cold
Condition Immunities grappled, prone, restrained
Senses darkvision 60 ft., tremorsense 60 ft., passive Perception 16
Challenge 12 (8,400 XP)

Special Traits

  • Ground Disruptor. When the glacier behemoth moves, it can choose to make the area it moves through difficult terrain. When it uses Inexorable Charge, it automatically makes the ground difficult terrain.
  • Unstoppable. Difficult terrain composed of ice, rocks, sand, or natural vegetation, living or dead, doesn’t cost the glacier behemoth extra movement. Its speed can’t be reduced by any effect.


  • Multiattack. The glacier behemoth makes two bite attacks.
  • Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., one creature. Hit: 33 (4d12 + 7) piercing damage.
  • Inexorable Charge. If the glacier behemoth moves at least 10 feet, it can then use this action to continue moving in a 40-foot line that is 15 feet wide. Each creature in this line must make a DC 17 Dexterity saving throw. On a failure, a creature takes 35 (10d6) bludgeoning damage and is knocked prone. On a success, a creature takes half the damage and isn’t knocked prone. The glacier behemoth’s movement along this line doesn’t provoke opportunity attacks.


A depression in the ground trails in the wake of this six-legged creature. Aged ice, appearing more like granite, covers the creature’s body.

Slow but Steady. Glacier behemoths earn their name from their resemblance to glaciers, including their slow, relentless pace. Their squat frames help conceal their six legs, reinforcing the notion that they are calved glaciers.

Short of chasms blocking its way or the intervention of other glacier behemoths, nothing can stop a glacier behemoth when it moves. Its tough hide combined with its primal intellect render it fearless as it lumbers after its foes.

Bulettekin. Glacier behemoths are arctic relatives to bulettes, but their existence predates their temperate land-inhabiting kin. They are just as aggressive as their smaller cousins, but they don’t have the speed or agility bulettes possess. They are also not as particular about the type of food they eat, owing to the lack of choice in the barren lands they inhabit.

Path of Destruction. Weighing at least 15 tons, a glacier behemoth can’t help but crush everything in its wake. It leaves deep furrows in the ground as wide as its body. A sure sign of a wandering glacier behemoth is a crisscrossing set of ditches.

Despite its lack of stealth, a glacier behemoth can still take a settlement by surprise thanks to its ability to dig through the earth. The behemoth burrows into a building through the floor and attacks anything it finds. After this initial assault, it devastates the rest of the settlement, picking off those foolish enough to stay and fight.

Section 15: Copyright Notice

Tome of Beasts 2. © 2020 Open Design LLC; Authors Wolfgang Baur, Celeste Conowitch, Darrin Drader, James Introcaso, Philip Larwood, Jeff Lee, Kelly Pawlik, Brian Suskind, Mike Welham.

This is not the complete section 15 entry - see the full license for this page