Blizzard wolf

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

Pack Tactics. The wolf has advantage on an attack roll against a creature if at least one of the wolf'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.

Ice trap. Any creature reduced to 0hp within 30ft of a blizzard wolf must succeed two DC 12 constitution saving throws.

Upon one failure, the creature immediately begins to freeze over. If succeeding the second, the creature takes a -2 penalty to all rolls until their next long rest.

If the creature fails both saving throws, it immediately stabilizes as its body is transformed into solid ice and is considered petrified. This effect can only be reversed by either a greater restoration spell, or by stopping the blizzard which created the wolves in the first place.

This effect ends on a successful saving throw.

Multiattack. The wolf makes two attacks: one with its bite and one with its claws, and, if it is able, uses its cold breath.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage. If the target is a creature, it must succeed on a DC 16 Strength saving throw or be knocked prone.

Claws. Melee Weapon Attack: +8  to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) piercing damage.

Cold Breath (Recharge 5–6). The wolf exhales a blast of freezing wind in a 15-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 18 (4d8) cold damage on a failed save, or half as much damage on a successful one.

Team work. If a creature makes an attack against an ally within 5ft of the wolf that it can see, the wolf can use its reaction to impose disadvantage on the attack roll.