Tengu format ruling
Majestic Red Dragon
Card effect (current official text)"Majestic Dragon" + "Red Dragon Archfiend" + 1 non-Tuner monster
Cannot be destroyed by card effects. After damage calculation, if this card attacks: Destroy all Defense Position monsters on the field. Once per turn: You can target 1 face-up monster your opponent controls; negate its effects, and if you do, this card gains ATK equal to that monster's ATK. These changes last until the end of this turn. During the End Phase: Target 1 "Red Dragon Archfiend" in your Graveyard; return this card from the field to the Extra Deck, then Special Summon that target.
Rulings
The ③ effect:
- You cannot negate the effects of a monster which already has its effects negated. The ④ effect:
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.