Cat of Ill Omen

Menace
Morph {p/b} or {p/r}(You may cast this face down as a
0/2 creature for {1}. Turn it face up any time for
its morph cost.)
When this is turned face-up, reveal one mana
value 5 or less Trap or Fiend from your library,
shuffle the rest then put the revealed card on the
top of your library.