Black Lagoon

(Add {u} or {b}.)
Black Lagoon enters the battlefield tapped.
When Black Lagoon enters the battlefield, you
may pay {u/b}{u/b}. If you do, search your library and/or graveyard for a card named Gillman of
the Black Lagoon, reveal it, then put it into your hand. If you searched your library this way, shuffle it.