Avatar of Ruin

You can't spend mana to cast this spell.
Eminence - As long as Avatar of Ruin
is in the command zone or on the battlefield,
all you spells have devoid and can be cast as if
their mana cost was colorless.
Sacrifice 13 unique permanence with Devoid:
Play Avatar of Ruin.
Indestructible, Trample, Annihilate 3