Forum:Question about Stardust Dragon's effect

My understanding of this direct quote from the Rulings Page on Stardust Dragon: "Stardust Dragon's" first effect can be activated during the Damage Step.[1]" is that when my opponent attacks another monster on my side of the field, since I can activate Stardust Dragon's effect during the Damage Step, if I tribute Stardust Dragon, I can destroy the card that destroyed my monster.  But that is a contradiction on the effect, on the card.  It says, that you can tribute Stardust Dragon to destroy, a Spell, Trap or Effect Monster's effect that destroys a monster.  In my example, you aren't using an effect, you are beating it by battle.  What is the correct ruling on the card.

Duelist33 18:42, 2 January 2009 (UTC)