Card Rulings:Red Dragon Archfiend

"Red Dragon Archfiend":

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TCG Rulings

• "Red Dragon Archfiend's" effect activates after damage calculation in the Damage Step, before the effects of flipped Flip Effect Monsters or the effects of cards like "D.D. Warrior" activate. If "Red Dragon Archfiend" attacks a face-down Flip Effect monster and destroys the Flip Effect monster with its effect, the Flip Effect monster's Flip Effect activates after it is destroyed.

• If the Defense Position monster attacked by "Red Dragon Archfiend" is changed to Attack Position before damage calculation with "Final Attack Orders", etc., "Red Dragon Archfiend's" effect does not activate.

• If "Red Dragon Archfiend" attacks a Defense Position "Giant Rat," etc., and destroys it with its effect, "Giant Rat's" effect does not activate because it is destroyed by "Red Dragon Archfiend's" effect before it would be sent to the Graveyard by battle.

• If the attack of one of your monsters is negated, with "Magic Cylinder", etc., the monster is destroyed by "Red Dragon Archfiend's" effect in your End Phase.

• “Red Dragon Archfiend’s” second effect will activate during each of your End Phases, even if every monster you control has attacked.

Mentions in Other Rulings

• Pandemonium: You can't use "Pandemonium" to add a... Synchro Monster Archfiend from the Extra Deck to your hand, like... "Red Dragon Archfiend".

• Stardust Dragon: If your Defense Position "Stardust Dragon" is attacked by "Red Dragon Archfiend" and it is destroyed by battle, you cannot chain "Stardust Dragon's" effect to "Red Dragon Archfiend's" effect that destroys your Defense Position monsters.

OCG Rulings

• When a monster's attack is negated by "Magic Cylinder", you still destroy it during the End Phase.

• When "Red Dragon Archfiend" attacks and destroys a Defense Position "Giant Rat", "Red Dragon Archfiend"'s effect destroys "Giant Rat", so "Giant Rat"'s effect is not activated.

• "Red Dragon Archfiend"'s first effect activates immediately after Battle Damage would be inflicted (or, immediately after Battle Damage is inflicted, if "Red Dragon Archfiend" is equipped with "Fairy Meteor Crush").

• If "Red Dragon Archfiend/Assault Mode" etc is destroyed by a card effect while face-down, you cannot activate the effect which Special Summons "Red Dragon Archfiend" etc.

• If "Red Dragon Archfiend/Assault Mode" etc is destroyed and removed from play by "Bottomless Trap Hole" etc, then you can activate the effect that Special Summons "Red Dragon Archfiend" etc.

• When "Red Dragon Archfiend/Assault Mode" etc is destroyed while in your Spell & Trap Card Zone - for example, it is equipped to "Relinquished" - then you can activate the effect and Special Summon a "Red Dragon Archfiend" etc.

• When "Red Dragon Archfiend/Assault Mode" etc is destroyed during the Damage Step - either by an effect or by battle - you can activate the effect which Special Summons "Red Dragon Archfiend" etc from your Graveyard.

• If "Red Dragon Archfiend/Assault Mode" etc is Special Summoned by "Re-Assault", when the monster is later destroyed and removed from play, its effect does not activate on the field, so it will not be negated. You can Special Summon a "Red Dragon Archfiend" etc.