Aeronet, God of the Ages

Indestructible
As long as your devotion to white, black, and
green is less than nine, Aeronet isn't a creature.
At the beginning of your upkeep, return an enchantment card at random from your
graveyard to your hand.
{w}{b}{g}, Sacrifice an enchantment: Put target
card in a graveyard on the bottom of its owner's library.