Centumillennium Shrine

If Centumillenium Shrine is in your opening
hand, you may begin the game with it on the
battlefield.
Your devotion to each color is increased by twice
the number of creatures you control.
{x}, {t}: Add X mana in any combination of colors
to your mana pool.
In a time far before history can recall, humans
worshiped the titans above all mortal possession.