This brings Rock-Paper-Scissors to a whole new level! The basic idea is that there are two sideboards for each player. If a player decides to switch cards between his deck and sideboard, he must use every card in his sideboard. Also, a unique color must be introduced with both sideboards. The effect becomes something along the lines of three seperate decks with only 15 cards difference between them. It gets really interesting because the 4-card only limit still applies, meaning that if four copies of a card appear in one sideboard, they must not appear in the main deck or the other sideboards. The Restriced/Banned lists are as T1.5 as of yet.