Servant of the Old Ones

{u}{b} Willing Sacrifice (Sacrifice this card and create a 2/2 black monstrosity token with
"{t}{b}{b} Put a madness counter on yourself,
madness counters work as outlined on
'Cthulhu's High Priest', once you have five
such tokens, you may exile them along with five cards off the top of your deck to bring an Ancient Elder God card into play.