Uruk's Gorilla

Charge. If the beast moves at least 20 feet straight toward a target and then hits it with a maul attack on the same turn, the target takes an extra 1d6 slashing damage. If the target is a creature, it must succeed on a Strength saving throw against your spell save DC or be knocked prone.

Primal Bond. You can add your proficiency bonus to any ability check or saving throw that the beast makes.

Taunt (recharge 6). All creatures within 30 feet must make a charisma saving throw against your spell save DC. If it fails the creature is charmed and is compelled to attack and only attack the gorilla. It may repeat this saving throw each time it takes damage or at the end of its turn. On a success the creature is unaffected by this ability

Maul. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d10 + PB slashing damage.

Spiritual Shield. When the Gorilla is hit by an attack it may use its reaction to create a spectral shield around itself increasing its AC by 5

You can use this feature a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.