Bone Savage

Blood Frenzy. The Bone Savage has advantage on attack rolls against a creature that doesn’t have all its hit points.

Legendary Resistance (2/Day). When the Bone Savage fails a saving throw, it can choose to succeed instead.

Regeneration. The Bone Savage regains 10 hit points at the start of each of its turns. If the Bone Savage takes damage from a silver weapon, this trait doesn’t function at the start of the Bone Savage’s next turn. The Bone Savage dies only if it starts its turn with 0 hit points and doesn’t regenerate.

Sure-Footed. The Bone Savage has advantage on Strength and Dexterity saving throws made against effects that would knock it prone.

Pounce. If the Bone Savage moves at least 20 feet straight toward a creature and then hits it with an Antlers attack on the same turn, that target must succeed on a DC 17 Strength saving throw or be knocked prone. If the target is [condition]prone[/conditon], the Bone Savage can make one Slam attack against it as a bonus action.

Multiattack. The Bone Savage uses its frightful presence and then makes three attacks: two slam attacks and one Antlers.

Slam. Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 19 (3d8+6) bludgeoning damage plus an extra 7 (2d6) necrotic damage. If the target is a creature, it must succeed on a DC 17 Strength saving throw or be knocked prone.

Antlers. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 17 (2d10+6) piercing damage plus an extra 7 (2d6) necrotic damage.

Frightful Presence. Each creature of the Bone Savage's choice that is within 120 feet of the Savage and aware of it must succeed on a DC 16 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the Bone Savages Frightful Presence for the next 24 hours.

The Bone Savage 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 Bone Savage regains spent legendary actions at the start of its turn.

Raking Swipe. The Bone Savage makes one Slam attack.

Stampeding Lunge (Costs 2 Actions). The Bone Savage moves up to its speed without provoking opportunity attacks, and it can make one Antlers attack against each creature it moves past.

Death Shout (Costs 3 Actions). The Bone Savage releases a dreadful shout like howl any creature within 120ft. of the Bone Savage that can hear it, must make a DC 16 Constitution saving throw, on a failed save a creature takes 25 (6d10) necrotic damage and gains 1 level of exhaustion. on a successful save a creature takes half damage and isn't given a level of exhaustion.