Shelldock Isle (SLD-230) - Secret Lair Drop (Borderless)

Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)
Shelldock Isle enters the battlefield tapped.
: Add .
, : You may play the exiled card without paying its mana cost if a library has twenty or fewer cards in it.