Aspect of Miguel

Adhesive (Mimic Form Only). The Aspect of Miguel adheres to anything that touches it. A Huge or smaller creature adhered to the Aspect of Miguel is also grappled by it (escape DC 20). Ability checks made to escape this grapple have disadvantage.

False Appearance (Mimic Form Only). If the Aspect of Miguel is motionless at the start of combat, it has advantage on its initiative roll. Moreover, if a creature hasn’t observed the mimic move or act, that creature must succeed on a DC 20 Intelligence (Investigation) check to discern that the Aspect of Miguel is animate.

False Appearance (Mimic Form Only). While the Aspect of Miguel remains motionless, it is indistinguishable from an ordinary object.

Legendary Resistance (3/Day). If Aspect of Miguel fails a saving throw, he can choose to succeed instead.

Damage threshold 10

Reflective Muscles (Ninja and Powerfull build Form Only). Any time the Aspect of Miguel is targeted by a weapon attack roll, roll a d6 On a 1 to 4, the Aspect of Miguel is unaffected. On a 5 and 6, the Aspect of Miguel is unaffected, and the effect is reflected back at the attacker as though it originated from the Aspect of Miguel, turning the attacker into the target.

Superhero landing (Powerfull build Form Only). When the Aspect of Miguel jump at least 30 feet, each creatures within 15 feet of the landing point must succeed on a DC 20 Strength or Constitution save or be knocked prone.

Spellcasting. The Aspect of Miguel is special spellcaster (spell save DC 20, +19 to hit with spell attacks). The Aspect of Miguel has following spells prepared:
At will (8th level) for every form: Summon Construct, Intellect Fortress, Power Word Stun, Power Word Pain 

At will (8th level) for Mimic Form Only: Major Image

At will (8th level) for Ninja Form Only: Greater Invisibility 

1/day each, for Powerfull Build Form Only: Invulnerability, Earthquake

Evolution (Recharges after a Short or Long Rest). If Aspect of Miguel is reduced to 0 hit points, he doesn’t die or fall unconscious. Instead, he evolutes to his new form, with full Hit Point (315). He evolutes from Mimic to Ninja to Powerfull build form.

Multiattack (Ninja and Powerfull build Only). The Aspect of Miguel makes three Dumbell attacks.

Bite (Mimic Form Only). Melee Weapon Attack: +19 to hit, reach 10 ft., one target. Hit: 36 (4d12 + 10) piercing damage. If the target is a creature, it is grappled (escape DC 20). Until this grapple ends, the target is restrained, and the Aspect of Miguel can’t bite another target.

Dumbell (Ninja and Powerfull build Form Only). Melee or Ranged Weapon Attack: +19 to hit, reach 10ft. and range 100/200, one target. Hit: 28 (4d8 + 10) bludgeoning damage. If the target is a Huge or smaller creature, it must succeed on a DC 20 Strength saving throw or be knocked prone. (Powerfull build Form Only) The target and each creature within 10 feet of it must succeed on a DC 20 Constitution save of take (8d8) force damage.

Sneak Attack (Ninja Form Only). Once per turn, the Aspect of Miguel deals an extra 52 (15d6) damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally of the Aspect of Miguel that isn't incapacitated and the Aspect of Miguel doesn't have disadvantage on the attack roll.

Pec pop of love (Powerfull build Form Only). When a creature becomes prone, the Aspect of Miguel can use his reaction to force the creature to succeed a DC 20 Charisma saving throw or be charmed by him until the end of the creature next turn.

The Aspect of Miguel can take 3 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. The Aspect of Miguel regains spent legendary actions at the start of its turn.

Weapon attack (Costs 1 Action). The Aspect of Miguel makes a weapon attack.

Jump (Costs 1 Action). The Aspect of Miguel jumps up to half his fly speed.

Spellcasting (Costs 2 Action). The Aspect of Miguel uses his spellcasting ability.