Captain James Tabby

When you cast Captain James Tabby look at the top six cards of your library, reveal up to two party creatures from among them and put them onto the battlefield, then put the rest on the bottom of your library in any order.
At the beginning of combat on your turn, if you have a full party, creatures you control gain double strike until end of turn.
(Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)