Dark Powers

This spell costs {1} less to cast for each creature
in your party. (Your party consists of up to one Cleric, Rogue, Warrior, and Wizard, each.)
Search your library for a card, put it into your
hand, then shuffle your library. If you have a full party, you may cast a spell with converted mana
cost 4 or less from your hand without paying its
mana cost.