(Is this still Yu-gi-oh, or not? If not, then option B) Option A: I only had one Alicorn in play, the other four slots are pegasi. I play Rainbow maker: For every pegasi on the board gain 500 attack. It then destroys any monster you have. Option B: I play my second All is dust, then summon It that Betrays. (Option B is MTG, if you're wondering.)