Edison format ruling
Prideful Roar
Card effect (current official text)During damage calculation, if your monster battles an opponent's monster with a higher ATK: Pay LP equal to the difference in ATK; your monster gains ATK equal to that difference +300, during damage calculation only.
Rulings
- This card does not target.
- You can activate this card when a Defense Position monster you control battles.
- If your monster’s ATK is higher than the ATK of the monster it’s battling when "Prideful Roar" resolves, "Prideful Roar’s" effect disappears.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.