Crystal Gorilla

Crystal-Fortified Body:
The Crystal Gorilla’s hide is reinforced with tough crystal plating. It has resistance to radiant damage and is immune to being knocked prone.

Roaring Presence (Recharge 5–6):
The Crystal Gorilla lets out a thunderous roar. All creatures within 30 feet of it that can hear it must succeed on a DC 16 Wisdom saving throw or be frightened for 1 minute. A frightened creature can repeat the saving throw at the end of its turns, ending the effect on itself on a success.

Multiattack:
The Crystal Gorilla makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target.
Hit: 19 (1d10 + 6) piercing damage.

Claw. Melee Weapon Attack: +9 to hit, reach 10 ft., one target.
Hit: 21 (2d8 + 2) slashing damage.

Pounce (Recharge 6):
The Crystal Gorilla leaps up to 20 feet in a straight line and lands on a creature. The target must make a DC 16 Strength saving throw or take 20 (2d8+4) bludgeoning damage and be knocked prone.