Advanced format ruling
Ryu Kokki
Card effect (current official text)At the end of the Damage Step, if this card battled a Warrior or Spellcaster-Type monster: Destroy that monster.
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.