Select and destroy 1 face-up monster, and inflict damage to both players equal to its ATK.
Target 1 face-up monster on the field; destroy that target, and if you do, inflict damage to both players equal to that target's ATK.
During your opponent's turn: Target 1 face-up monster your opponent controls whose ATK is less than or equal to their LP; destroy that face-up monster, and if you do, take damage equal to its original ATK, then inflict damage to your opponent, equal to the damage you took. You can only activate 1 "Ring of Destruction" per turn.
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