Bite

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 21 (3d10 + 5) piercing damage, and the target must succeed on a DC 15 Strength saving throw or be knocked prone.

Frost Breath (Recharge 5-6)

The hound exhales a 15-foot cone of frost. Those in the area of effect take 44 (8d10) cold damage, or half damage with a successful DC 13 Dexterity saving throw.