Card Rulings:Koa'ki Meiru Sandman

OCG Rulings

 * You can activate the Trap Card-negating effect of ":" even during the Damage Step.


 * The Trap Card-negating effect of ":" is optional. The player chooses if the effect activates.


 * Tributing ":" is a cost to activate its Trap Card-negating effect.


 * The effect of ":" does not target.