Blank

Shapechanger. The creature is stuck in his beast form and will revert back to his original form (humanoid) apon death or if the spell calm emotions is cast on him brings him back temporarily. However he can materialize the physical qualities of what he eats onto his own body as an action. He can't use his bite, claws or breath weapon while in his original form.

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

Regeneration (beast form only). The creature regains 20 hit points at the start of its turn. If the blank takes acid or fire Damage, this trait doesn’t function at the start of its turn. The blank dies only if it starts it turn with "0" hit points and doesn’t regenerate.

Multiattack (beast form only). The creature makes two attacks, one with his claws and one with his bite. When his fire breath is available, it can use the breath in place of its bite.

Shapechange. As an action you can change your form into a monstrosity of different creatures that you have eaten before, using the traits that you have gained through your bite attack.

Bite (beast form only). Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage. When he bites a creature he gains 3 traits of the bitten creature such as stats, size, non weapon based physical attacks, movements types, sight types, immunities, resistances, non spellcasting magical abilities, non legendary action abilities.

 Claws(beast form only). Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Fire Breath (beast form only) (Recharge 5–6). The creature exhales fire in a 15-foot cone. Each creature in that area must make a DC 17 Dexterity saving throw, taking 45 (10d8) fire damage on a failed save, or half as much damage on a successful one.