Vorinclex

Legendary Resistance (2/day). If Vorinclex fails a saving throw or skill check, it can choose to succeed instead. Recharges when Vorinclex falls below half maximum HP.

Voracious Savagery. Vorinclex treats a natural 18 and higher roll as a critical for any melee attack he makes.

Fierce Combat. When Vorinclex makes an opportunity attack, add 1d6 to his attack roll and damage.

Multiattack. Vorinclex makes four attacks: two Claws, one Bite, and one Slam.

Claws. Melee attack: +15 to hit, one target. Hit: 3d10 + 11 slashing damage.

Bite. Melee attack: +15 to hit, one target. Hit: 4d8 + 11 piercing damage.

Slam. Melee attack: +15 to hit, one target. Hit: 4d12 + 6 bludgeoning damage, and the target must make a DC 22 Strength saving throw or be flung backwards up to 30 ft. If a solid surface stops their motion, they take an additional 2d6 bludgeoning damage from the wall/surface they slam into.

Charge. Vorinclex may move up to double his speed in a straight line, and as long as he moves 30 ft. or more, he may make a Slam attack. 

Voice of Hunger (once/day). Vorinclex roars, baring his razor claws and lethal fangs in a terrifying display of power. Each creature within 100 ft. of Vorinclex is knocked back away from him  15 ft. and takes 4d4 psychic damage. Each affected creature must make a DC 20 Wisdom saving throw or become frightened of Vorinclex for one minute.

Magic Deflection. When Vorinclex becomes the target of a spell or magical ability, he can choose to reroll the player's attack roll or his saving throw (not both).

Vorinclex can take 2 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. Vorinclex regains spent legendary actions at the start of its turn.

Primal Fury. Vorinclex flails his claws around him wildly, slashing at anything nearby. Make two Claw attacks at each creature within 10 ft. Attack rolls for this legendary action are made at disadvantage. 

Charge. Vorinclex takes the Charge action.

For 1 hour after using Voice of Hunger, Vorinclex gains the Apex Predator status. As long as Apex Predator is active, he can use these mythic actions as legendary actions.

Focus Prey. Vorinclex chooses a creature he can see. Until the end of his next turn, all attacks he makes against the chosen creature have advantage.

Gorge. Vorinclex makes an attack against a nearby unconscious creature. With his claws and mouth, he shreds the body apart and consumes its flesh, instantly killing it and regaining HP equal to one half its max HP.