REDU format ruling
Ring of Destruction
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)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.
Rulings
- You cannot activate Ring of Destruction during the Damage Step.
- Ring of Destruction inflicts damage based on the current (total) ATK value, NOT the original ATK.
- This card targets a monster.
- If you chain Ring of Destruction to Magic Cylinder, Magic Cylinder’s effect disappears because the monster is no longer there (so Magic Cylinder inflicts no damage).
- If a player Tributes Witch of the Black Forest for Summoned Skull, you can chain Ring of Destruction to the effect of Witch of the Black Forest, in order to destroy Summoned Skull. If this reduces the player’s Life Points to zero, then they cannot use Witch of the Black Forest’s effect (to retrieve a 5th Exodia piece, for example).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.