Riptide Shapeshifter [Onslaught]

Set: Onslaught Type: Creature — Shapeshifter Uncommon Cost: {3}{U}{U} {2}{U}{U}, Sacrifice Riptide Shapeshifter: Choose a creature type. Reveal cards from the top of your library until you reveal a creature card of that type. Put that card onto the battlefield and shuffle the rest into your library.