Gura and Bloop,Friendly Sharks

When Gura and Bloop, Friendly Sharks
enters the battlefield, search your deck for a
Merfolk or Shark creature card and exile it.
Shuffle your library and place the exiled
card on top.
If Gura and Bloop, Friendly Sharks would
be put into your graveyard from anywhere by a
Merfolk or Shark creature card, you may pay {u}. If you do place this card on top of your
library instead.