Yanmega is actually a great great counter to this if used in a DCE abusing deck.
It OHKOs Squirtle, OHKOs Blastoise, takes only colorless, can stall, can set up Keldeo EX for a Darkrai snipe, and is a pretty easy to fit in.
Just watch out.
Cause Yanmega is coming to town.
This is serious btw^