Advanced format ruling
Swift Samurai Storm!
Card effect (current official text)Each turn, after the first time a "Six Samurai" monster you control battles, all "Six Samurai" monsters you control gain 300 ATK until the end of this turn.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.