Punchshroom
FISHIOUS REND MEGA SHARPEDO
Would you really bother passing speed boosts to Camerupt when it could learn Rock Polish on its own? I've tried an unorthodox Rock Polish Rupt with Stone Edge to hit Mantine, Charizard and Altaria which works decently, though the choice in nature was a tricky one. The ability to switch into Electrics without fearing a super effective move also makes SDef Camerupt an interesting choice.
Edit: Well celever, I've just mentioned that Camerupt usually has little to fear from specially oriented Electric-types, the most threatening attack would likely be in the form of Focus Blast or STAB Air Slash, otherwise it's weak Giga Drains, Psychics or Hidden Powers, which is enough opportunity to setup Rock Polish. I'll admit from experience that SDef Rupt doesn't work in NU nearly as well as in RU, where Electrics and Bugs are more prevelant and most Waters dislike STAB Earth Power.
Edit: Well celever, I've just mentioned that Camerupt usually has little to fear from specially oriented Electric-types, the most threatening attack would likely be in the form of Focus Blast or STAB Air Slash, otherwise it's weak Giga Drains, Psychics or Hidden Powers, which is enough opportunity to setup Rock Polish. I'll admit from experience that SDef Rupt doesn't work in NU nearly as well as in RU, where Electrics and Bugs are more prevelant and most Waters dislike STAB Earth Power.