Players need three (3) sets of one (1) magi, twenty (20) card decks (called a "slinger"). Each magi must be unique (standard rules), but need not be of the same region. Only one copy of any card may be used in each slinger (3 maximum between all slingers). When your magi is defeated, you choose which to play next. Also, you may "tag-out" (Interchange) your magi at the end of your turn! For full rules, see www.dreamtimemedia.org/magi-nation/.