Aion, God of Eternity

Ingest, reach, trample
Aion's toughness is equal to X.
As long as your devotion to colorless is less than
seven, Aion isn't a creature.
At the beginning of your upkeep, you may
sacrifice three creatures. If you do, return Aion
from your graveyard or exile to your hand.
{4}{t}, Summon a 3/3 colorless Hydra creature
token with ingest.