Aven Seer

Flying
Prowl {2}{u/b}{u/b} (You may cast this for its prowl cost if
you dealt combat damage to a player this turn with a
Bird or Rogue.)
If the prowl cost was paid you get a emblem with
"At the end of you're turn if a prowl cost was
paid you may search your library for a card with
prowl reveal it then put it into your hand then
shuffle your library."