Byfrons, God of Death

Indestructible, vigilance.
As long as your devotion to white, black, and
green is less than nine, Byfrons isn't a creature.
Threshold — As long as seven or more cards are
in your graveyard, creatures you control have
exalted and vigilance, and cards in all graveyards
can't be the target of spells or abilities your
opponents control.