Forum:Orichalcos VS Stardust

Hello there. I'm not sure of a ruling. If I play The Seal of Orichalcos while I have a Stardust Dragon on the field, and I activate Stardust's effect, what will be negated : the activation of the Seal or the effect that destroys special summoned monsters? Because of the writing : "When this card is activated: Destroy all Special Summoned monsters you control" (it's not the activation of the Seal itself that destroys the special summoned monsters), I think it's the second choice, but I want to be absolutely sure before playing this combo in a duel. Thanks for the answer. Takame9 (talk • contribs) 14:24, October 3, 2012 (UTC)