Indominus Rex (5e Creature)
From D&D Wiki
Large beast, unaligned
Thermal Adaptability. Indominus can modify its body temperature
Camouflage. Indominus is invisible when hidden and motionless
Legendary Resistances (3/Day). If the I-rex fails a saving throw, it can choose to succeed to instead.
Multiattack: The Indominus uses roar and makes two claw attacks or one claw and one bite
Bite. Melee Attack: +13 to hit, reach 10 ft., one target. Hit: 34 (4d12 + 8) piercing damage.
Claw. Melee Attack: +13 to hit, reach 10 ft., one target. Hit: 21 (3d8 + 8) slashing damage.
Tail Whip. Melee Attack: +13 to hit, reach 10 ft., multiple targets. Hit: 18 (2d10 + 8) bludgeoning damage.
Roar. All creatures within 120ft of the I-rex must succeed a DC 18 Wisdom Saving throw unless they are aware of it which is a DC 13 Wisdom Saving throw, or be frightened for 1 minute. Effects don't stack.
The Indominus Rex is what happens when Dark Magic goes out of hand. The creature was created by fusing the souls of a Tyrannosaurus and a Novaraptor. But the Dark Magician Massawu didn't stop there. He fused this abomination with the fragmented souls of Carnotaurus, Giganotosaurus, Majungasaurus, Therizinosaurus, Pit Viper, Tree Frog, and Cuttlefish to create what he viewed as the perfect predator. The Indominus Rex was released into the wild to terrify the masses and cement his control over the land. It preys upon anything it can sink its teeth into, this includes the massive sauropods, Humanoids, and even constructs. The Indominus is unstoppable, but they are not without flaws. The adventurer Kyser Darnum managed to tame an Indominus Rex. However, no one has seen either of them in many years. Many have tried to follow the trail left by the creatures, but none have ever returned.