Roserade

Roserade holds a niche as a powerful attacker thanks to its massive base 125 Special Attack and ability to hit nearly the entire tier for neutral damage. Access to Poisonium Z alongside two powerful STAB attacks allows Roserade to threaten the common defensive backbones consisting of Fairy-, Ground-, and Water-types that flood the UU tier. Useful utility in Sleep Powder coming off a fast base 90 Speed stat and a Technician-boosted Hidden Power Fire gives Roserade a way to bypass its common checks while providing free turns for its entire team. Furthermore, a Grass / Poison typing enables Roserade to absorb Scald, Toxic, and Spore from defensive Pokemon on offensive teams while still providing respectable damage output thanks to its high Special Attack. However, its terrible base 60 HP and 65 Defense means that Roserade is revenge killed by faster offensive threats like Mega Aerodactyl, Infernape, and Latias and strong priority users like Choice Band Scizor, and Roserade even struggles switching into hard-hitting resisted attacks from slower Pokemon like Primarina's Moonblast. Roserade's longevity is also hampered by its proneness to being Pursuit trapped once weakened by Mega Aerodactyl and Krookodile, two very common attackers in the metagame.