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Duel Masters with Kaga ZUI!
Don't allow loops.
Duel Masters term for a recursion engine, i.e. combination of cards that, once started (usually by paying some initial cost), allows a player to 'draw' (or put back into hand) and play cards for free, and also recurses into itself to allow drawing of the same (already played) cards to continue the loop, letting the player repeat (a) particular effect(s) ad infinitum.
The term can also refer to a deck built to take advantage of this combo.