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

Super Luck. Absol can critical hit on a 19 or 20.  Once per day, whenever Absol rolls a Natural 1, it can remake that roll.

Future Sight. Absol can sense the future.  Absol has advantage on its saving throws against spells that would cause damage.  Absol can sense natural disaster, the bigger the danger, the stronger is its sight.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (1d10 + 2) piercing damage. 

Night Slash. MeleeWeapon Attack: +4 to hit, one 5 ft., one target. Hit: 6 (1d8 + 2) slashing damage.  If this move is a critical hit, it has an extra 9 (2d8) necrotic damage.