REDU format ruling
Mist Archfiend
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)You can Normal Summon this card without Tributing. Once per turn, during the End Phase, if this card was Summoned this way: Destroy this card, and if you do, take 1000 damage.
Rulings
- If Mist Archfiend is not in play in the End Phase, or when its effect resolves, its controller will not take 1000 damage.
- If this card is turned face-down by Book of Moon, etc. Chained to its effect, it will still be destroyed and its controller will take 1000 damage.
- The effect of Pandemonium can be activated when Mist Archfiend is destroyed by its own effect.
- If Mist Archfiend is Normal Summoned without Tribute, and control of it shifts to the opponent, its current controller will take the damage when its effect resolves during the End Phase.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.