Forum:Can Stardust Assault negate Pyramid Turtle

If Stardust Dragon Assault Mode attacks my pyramid can it then negate it's effect to special summon a monster. I didn't think so because the effect happens during the damage step but it came up in a duel and I'm not completely sure so I just want it cleared up. Greatsayaman007 18:10, May 21, 2010 (UTC)