Eirin Yagokoro, Genius God

Lifelink, Indestructible, Devoid. (This creature has no color.)
When a creature you control dies, exile it instead. You may draw an Aura enchantment card and enchant Eirin Yagokoro, Genius God with it.

If Eirin Yagokoro, Genius God. is enchanted, she loses Devoid and is considered all colors.

If Eirin is all colors, you may cast cards in exile for free. After casting 9 cards this way, remove and exile all enchantments from Eirin and exile all creatures that aren't Eirin Yagokoro, Genius God.