Big Bad 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 attack rolls 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.

Primal Fear. The Wolf gives off a sense of dread in all living enemies. At the start of an encounter, every opponent must must succeed on a DC 13 Wisdom saving throw or be frightened. If a frightened target ends its turn more than 30 feet away from the Wolf, the target can repeat the saving throw, ending the effect on itself on a success. If a creature passes the saving throw, it is immune to Primal Fear for 24 hours.

Legendary Resistance (3/Day). If the Wolf fails a saving throw, he can choose to succeed instead.

Multiattack. The wolf makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 14 (1d10 + 6) 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: 11 (2d8 + 6) piercing damage.

The Wolf can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The Wolf regains spent legendary actions at the start of its turn.

Swat Away. Once per round, the Wolf makes an attack with its claws. If the attack hits, the target must succeed on a DC 18 Strength saving throw or be pushed 15 feet in a straight line away from the Wolf. If the saving throw fails by 5 or more, the target falls prone.

Detect. The Wolf makes a Wisdom (Perception) check.

Slam Attack (Costs 2 Actions). The Wolf rears up and slams a single target with both paws. The creature must succeed on a DC 20 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked prone.