Forum:Stardust Assault vs Sanctuary + Divine Punishment

I have a set card in my opponent's turn. Then, he Special Summons Stardust Dragon/Assault Mode. In my turn, I activate The Sanctuary in the Sky, so his Stardust chains to my Spell. But I activate my set card, Divine Punishment. My question, may I do that? Thanks, Quasar-Honest 14:29, August 4, 2011 (UTC)