Multiattack

The doom golem makes one bite attack and one doom claw attack.

Doom Claw

Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 14 (2d6 + 7) slashing damage plus 7 (2d6) cold damage.

Bite

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 23 (3d10 + 7) slashing damage.

Wind of Boreas (Recharge 5-6)

The doom golem releases an arctic wind in a 15-foot radius around itself or in a 30-foot cone. Each creature in that area must make a DC 16 Constitution saving throw, taking 38 (11d6) cold damage on a failed save, or half as much damage on a successful one.