Forum:Just Desserts Card Ruling Question

Ok, so me and my friend were dueling today and he runs a burn deck and I run a swarm deck. When I swarmed he activated Just Desserts doing a bunch of damage to my life points, however in response to that, before I did anything, he activated a second just desserts he had on the field and he said that instead of 2500 points of damage to my life points, it now did 5000. My question is, is this move legal? If so, does it do double damage to my life points, or does the second Just Desserts cancel the first one out? Does this ruling apply to all other cards like Just Desserts, and are there any excepcions to the rule? 70.239.216.77 (talk) 00:04, March 18, 2011 (UTC)