Adam Fictus, deposed of blood

companion: Styx, god-candidate beast (When this
creature enters the battlefield you may search your
library for a card named "Styx, god-candidate beast"
and put that card into your hand).
Changeling (This card is every creature type.)
When this creature dies reveal cards from the top
of your library until you reveal a creature card.
Put that creature onto the battlefield, it gains this
ability. Then shuffle your library.