Arctic Fox

Keen Hearing and Smell. The fox has advantage on Wisdom Perception checks that rely on hearing or smell.

Pack Tactics. The fox has advantage on an attack roll against a creature if at least one of the fox's allies is within 5 feet of the creature and the ally isn't incapacitated

Snow Camouflage. The wolf has advantage on Dexterity Stealth checks made to hide in snowy terrain.

Bite. Melee Weapon Attack: [1d20]+2; to hit, reach 5 ft., one target. Hit: (1d6 + 4); piercing damage. If the target is a creature, it must succeed on a DC 14 Strength saving throw or be knocked prone.

Cold Breath (Recharge 5–6). The fox exhales a blast of freezing wind in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking (2d8); cold damage on a failed save, or half as much damage on a successful one.

Ice Spikes (Recharge 4-5). The fox ruffles it’s tail hairs into icicles and fires them at a creature within 30ft. That creature must make a DC 10 Dexterity saving throw, taking (4d4 + 3); cold damage on a failed save, or half as much on a successful one.