Arctic Camouflage. The giant has advantage on Dexterity (Stealth) checks made to hide in icy terrain.

Multiattack. The giant makes two greatclub attacks.

Greatclub. Melee Weapon Attack: +9 to hit, reach 15 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage.

Avalanche. Ranged Weapon Attack: +9 to hit, range 60/240 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage. If the target is a creature, it must succeed on a DC 17 Strength saving throw or be knocked prone.

Gift of Yom. The giant pulls out a "gift" from his furred bag. roll 1d6, If you roll 1 to 2 Yom pulls out his trusted pet Ruddie. If a 3 if roll nothing happens. If a 4 to 5 is rolled a Ice Storm spell is unleased from the bag. If a 6 is rolled Absolute Zero spell is unleased from the bag.

Deadly Dash. If Yom dashes at least 15 ft. as part of its Movement, it can then use this Action to land on its feet in a space that contains one or more other Creatures. Each of those Creatures must succeed on a DC 16 Strength or Dexterity saving throw (target's choice) or be knocked prone and take 14 (3d6 + 4) bludgeoning damage plus 14 (3d6 + 4) slashing damage. On a successful save, the creature takes only half the damage, isn't knocked prone, and is pushed 5 ft. out of Yom's space into an unoccupied space of the creature's choice. If no unoccupied space is within range, the creature instead falls prone in Yom's space.

Rock Catching. If a rock or similar object is hurled at the giant, the giant can, with a successful DC 10 Dexterity saving throw, catch the missile and take no bludgeoning damage from it.

Artic Touch. As a legendary action this creature creates a 50 ft cone of frost that creates difficult terrain that lasts for 1 minute. If a creature is inside the cone and fails a dex save of 15, they take 2d8+8 of frost damage and are paralyzed for your next turn.