REDU format ruling
Berserk Dragon
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Cannot be Normal Summoned/Set. Must be Special Summoned with "A Deal with Dark Ruler" and cannot be Special Summoned by other ways. This card can attack all monsters your opponent controls once each. During each of your End Phases, this card loses 500 ATK.
Rulings
- Berserk Dragon cannot be Normal Summoned or Set, and cannot be Special Summoned EXCEPT by the effect of A Deal with Dark Ruler. So Berserk Dragon cannot be Special Summoned with Monster Reborn, etc., even if Special Summoned properly first.
- If Berserk Dragon is removed from play with Interdimension Matter Transporter, you cannot try to resolve Berserk Dragon's effect before it returns to play; you must return it to play first and then it loses 500 ATK.
- While Skill Drain is active, Berserk Dragon's effects are negated. But Berserk Dragon's effect doesn't count turns, so if Skill Drain was active for 4 turns, and is then destroyed, do not reduce Berserk Dragon's ATK for those 4 turns.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.