Roselia

Access to Spikes and Toxic Spikes gives Roselia a niche as a bulky entry hazard setter on stall or heavily defensive balance teams. Thanks to its typing, Roselia is immune to poison and absorbs Toxic Spikes, and it can switch into most Water- and Grass-types and hit them super effectively. The combination of Natural Cure and a resistance to Water-type attacks makes Roselia one of the top switch-ins to Scald, only second to the likes of Jellicent, Cradily, Seismitoad, and Gastrodon, which are immune to Water-type attacks.

Unfortunately, even with Eviolite, Roselia's terrible base 45 Defense makes it susceptible to physical attackers. Common Fire- and Psychic-types such as Emboar, Delphox, and Medicham can OHKO Roselia, and Calm Mind users such as Sigilyph and Meloetta are especially dangerous because they can switch into Roselia and set up on it. Roselia depends on Eviolite for its bulk, so Knock Off and Trick users such as Gurdurr, Rotom-C, and Escavalier severely threaten it. Because Defoggers like Flygon and Togetic are very common, keeping entry hazards on the field can be difficult. Toxic Spikes is particularly difficult for Roselia to keep on the field because it has trouble getting past grounded Poison-types such as Drapion and Venusaur, though it can 3HKO Qwilfish with Giga Drain. Roselia faces strong competition as a Spiker from Qwilfish, which is the better option on most teams because it can take Knock Off better and use its fast Taunt to prevent foes from setting up.