Azura, Lady of Dusk and Dawn

Indestructible
As long as your devotion to white and black is less then seven, Azura isn't a creature.
{1}{w}{b}, sacrifice an artifact: Exile target non artifact creature, then put a +1/+1 counter on target creature you control equal to the exiled creature's power.
{e}:Remove a +1/+1 counter from target creature.