When a Spell/Trap Card, or monster effect, is activated during the Damage Step: Negate the activation, and if you do, destroy it.
|Pack||Valiant Souls [N]|
Super Rush Headlong can be countered if your opponent activates it during the Damage Step. Flip effects like Sylvan Komushroomo are negated as the effect activates during the Damage Step.
|Monster/Spell/Trap categories||Negates the activation of Effect Monster's effect / Negates the activation of Spell Cards / Negates the activation of Trap Cards / Destroys Monster Cards / Destroys Spell Cards / Destroys Trap Cards|