Roselia

Access to Spikes and Toxic Spikes gives Roselia a unique niche as one of the better entry hazard stackers in the tier and separates it from other Grass-types, especially Vileplume. Roselia also boasts a nice typing with great resistances to Water-, Grass-, Electric-, and Fighting-type moves, and its special bulk is bolstered to great levels thanks to Eviolite. A good Special Attack stat gives it a great niche as an offensive Spiker and prevents it from being a sitting duck when using defensive sets. However, Roselia faces competition from Vileplume, which boasts far greater physical bulk and lacks Roselia's susceptibility to Knock Off, letting it function as an actual Fighting-type check and, in general, check a significantly larger portion of the metagame. Other Spikers in Garbodor, Ferroseed, and even Cacturne also give Roselia stiff competition for a teamslot.