Orochi's Resurrection

Affinity for Demons (This spells costs {1} less to
cast for each Demon you control.)
Search your library or your graveyard for a card
named Yamata No Orochi, put it onto the
battlefield tapped, then shuffle your library if
you searched it this way.
"O, he who seeks power... He who has broken my
bonds... Speak the words 'I wish darkness unto the
world.' Utter that prayer unto me, and unleash
my power!"