Cosmic Flare (OP16-EN024) - OTS Tournament Pack 16 Unlimited

Target 1 "Stardust" Synchro Monster you control ; this turn , if that Synchro Monster you control battles an opponent's monster , shuffle that opponent's monster into the Deck at the start of the Damage Step. If a "Stardust" Synchro Monster you control would Tribute itself to activate its effect , you can banish this card from your GY instead.