Crawbone

King of the Beasts. Can summon any beasts of its choice within a 1 mile radius with its call.

Petrifying Call. Any creature within 50 ft after it’s call must roll a Wisdom saving throw against his intimidation roll or else be intimidated. Beasts under his command are more compelled to do his bidding if they fail.

Multiattack. The tyrannosaurus makes two attacks: one with its bite and one with its tail. It can't make both attacks against the same target.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 33 (4d12 + 7) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 17). Until this grapple ends, the target is restrained, and the tyrannosaurus can't bite another target.

Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.

Stomp. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. If the attack roll succeeds, the target must make a DC 17 DEX save. On a failure, take 6d12 bludgeoning damage, and on a success, half.

Crawbone gets 4 legendary actions per day.

King’s Call. Call 2 nearby beasts into the battle. Roll on the nearby beast list twice.

Tail Whip. Crawbone makes an attack with his tail.

Legendary Resistance. If Crawbone fails a save, he can choose to succeed.

Roar. Crawbone lets loose a mighty roar and every creature in the area must make Wisdom save equal to or higher than his intimidation roll. If the creature fails, they are frightened for the next minute. He cannot roar if Bite has been used and target has not escaped.