Donphan/Dragons (D&D) was a mildly successful deck last season. It involved Donphan Earthquaking until you built up enough damage on Reshirams and Zekroms to OHKO things.
Then came Ross (The Truth), which did everything D&D wanted to do, but better. Vileplume would halt catcher in its tracks, while Reuniclus would keep your pokemon from ever dying.
If you can set it up, Ross is pretty powerful, and with the advent of Kyurem you have a 3rd type that can attack in a similar fashion.