Did I mention Delphox had Magician, Timid nature, and perfect Sp. Attack, Sp. Defense, and Speed IVs? It outpaces Rotom anytime, and is usually only matched by Greninja for speedy Water types. I came up with the Power Herb/Solar Beam combo after someone mentioned it to me in a chat. Likewise, my Noivern utilizes a Switcheroo trap, which is why I gave it Choice Specs. Even if I can't pull off a good trap with it, I can still use the item to boost any one of its attack moves (Air Slash, Dragon Pulse, and Boomburst, the last of which usually kills without a lot of effort). I like using the item switch method because nobody sees it coming. It's great to trap people or take their items for my own use (when possible).
I came up with an interesting strategy using Zoroark and Mienshao in Gen V, which is why I still use them in Gen VI. I call it "Weasel Roundabout." People usually fall for it when I'm trying to bait them into sending out a Ghost or Psychic type. However, once I use Night Daze, I have to swap out or get KO'd. Sometimes I run across someone who isn't paying attention, so I can manage another attack right away. Mienshao is a monster to say the last because I maxed out its Speed with its nature and IV breeding, and Choice Band makes HJK an almost sure OHKO when I can get it to hit.