Tazri, Beacon of Unity [Zendikar Rising]

This spell costs 1 less to cast for each creature in your party.
2/U2/B2/R2/G: Look at the top six cards of your library. You may reveal up to two Cleric, Rogue, Warrior, Wizard, and/or Ally cards from among them and put them into your hand. Put the rest on the bottom of your library in a random order.