Erda, Goddess of Gods

Indestructible.
As long as your devotion to all colors is less than fifteen, Erda isn't a creature.
If you cast a God from your hand this turn, at
the beginning of your end step, reveal cards from
the top of your library until you reveal a God.
You may put that card onto the battlefield under
your control, tapped. If you do not put that card
onto the battlefield, put it into your hand.
If Erda is a creature, Gods you control have +1+1
for each other God you control.