Alien Melded Abomination

As an additional cost to cast this spell, exile a
creature card from your graveyard.
Alien Melded Abomination enters the battlefield
tapped.
Madness {1}{w/u}{u/b}
Exile two spirit creatures, {w}{u}{b}: Progress
(Sacrifice this creature, search your Library for
Soul Sucking Abomination, put it onto the
battlefield, and shuffle your Library.)
"Some cults have embodied of madness."