Crowley, Crossroads Demon

Protection from Humans
2{b}{b}: Sacrifice a creature you control. Create a
2/2 Lesser Demon with flying. Then, if you
control 5 or more demons, you may sacrifice
Crowley, Crossroads Demon and search your
library, graveyard, and/or exile for a creature
named Crowley, King of Hell and place Crowley,
King of Hell on the battlefield.