REDU format ruling
Ruin, Queen of Oblivion

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)You can Ritual Summon this card with "End of the World". When this attacking card destroys an opponent's monster by battle: You can activate this effect; this card can make a second attack in a row.
Rulings
- "It can attack once again in a row" means that this card can keep attacking until its condition to attack again is no longer fulfilled. It can make a second, third, fourth, etc attack this way.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.