Aluber the Jester of Despia

When Aluber the Jester of Despia enters the battlefield, you may look at the top 4 cards of
your library and reveal a noncreature spell that mentions Demons or Dragons to add to your
hand. Place the remaining cards on top of your library in any order.
{t} If you control a Demon or Dragon with mana
value {5} or more, target creature loses its abilities
until end of turn.