I've been testing this for some time and I believe Yanma should receive an analysis as it is a fearsome force late game because of its ability, Speed Boost. Although it lacks the ability to boost its own power, Yanma can take advantage of the many Baton Passing Pokemon and become impossible to stop late-game without strong priority attacks. Togetic is a great example of a pokemon that can effectively pass Nasty Plot boost to Yanma, helping it secure late-game sweeps.