You can Special Summon this card (from your hand) by returning 1 'U.A.' monster you control to the hand, except 'U.A. Blockbacker'. You can only Special Summon 'U.A. Blockbacker' once per turn this way. Once per turn, when your opponent Special Summons a monster(s): You can change their battle positions, and if you do, negate their effects.
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