So I pulled a FA Seismitoad EX from my elite trainer box yesterday(along with an SR M Lucario EX) and have been formulating some deck ideas. The most common one I have seen involve Pyroar and Garbodor, using the new Tool Retriever to take off the Garbodor’s tool when Pyroar is ready to roar, and using LaserBank to increase Seismitoad EX damage. I also run 2 Mewtwo EX for lategame damage. I recently saw another interesting idea though, using Greninja with Water Shrukin to increase the lousy damage output from Seismitoad EX. This one would run a lot of energy retrieval. I feel that the Garb/Pyroar would be better, but I am not sure.
Edit: I just remembered that I saw one that ran Cobalion, not sure how good that one would be though.