Genesis of the Demons

Search your library for a Demon card with converted mana cost 7 or less, and put that card onto the battlefield tapped. Create a number of 2/2 black Demon creature tokens equal to the creature's power.
"I have done it! I have found a way to eviscerate the closed gateway between Thestria, and the dark realms of Thestria. This plane now belongs to the Demons of Thestria. Anyone who stands in our way shall be wishing they were the ones trapped in the dark realms."