Spirit Arctic Direwolf

Traits

Life Bond. When you regain Hit Points from a level 1+ spell, the wolf regains the same number of Hit Points if you're within 5 feet of it.

Keen Smell. The wolf has Advantage on Wisdom (Perception) checks that rely on 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 doesn't have the Incapacitated condition.

Actions

Vicious Bite. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d10 + the spell's level Piercing damage. If the target has half its Hit Points or fewer, it takes an extra 2d6 Piercing damage.

Claw. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d8 + the spell's level Slashing damage, and the target has the Prone condition if it is Large or smaller.