Terrakion

Terrakion has a great Speed tier that allows it to perform as a decent offensive Stealth Rocker. It possesses a near-unresisted STAB combination, which allows Terrakion to serve as a strong wallbreaker and cleaner for offensive teams. On the downside, however, its typing also leaves it weak to Ground-, Water-, and Grass-type moves used by Landorus-T, Greninja, and Tangrowth, which are all common in the OU tier; this also means that it can be easily revenge killed by Ash-Greninja's Water Shuriken. In addition, it also faces competition as a wallbreaker and entry hazard setter from other threats, such as Landorus-T.