[@KaijuBaragon]

Keep in mind that 'Shadow Being' sounds a lot like [url=http://bokunoheroacademia.wikia.com/wiki/Dark_Shadow]Dark Shadow[/url] and that Iron Manipulation would either be being able to reshape it (so basicly bending it, which is already taken), being able to lift it (telekinesis, also taken I believe), being able to summon it (which would be a weird power), making your body iron (already have a [url=http://bokunoheroacademia.wikia.com/wiki/Steel]Steel one[/url]) or something in between...