Gliscor

Gliscor has proven to be one of the most defining Pokemon within the metagame, owing to its great typing, vast movepool, and incredible ability in Poison Heal, which not only grants it incredible passive recovery but also prevents it from being statused due to its constant state of being poisoned. These traits allow it to act as a valuable check to the prominent Heatran and to freely switch into Toxapex's Scald, not fearing a potential burn. Gliscor's Swords Dance variant is a premier setup sweeper, using its naturally good bulk and passive recovery to be difficult to pressure by defensive Pokemon. The aforementioned qualities also make it a utility powerhouse, being a great, consistent user of both Stealth Rock and Defog, as well as supporting its team with the momentum-grabbing U-turn. The downside to Gliscor's typing is its glaring 4x weakness to Ice leaving it threatened out by both Ice-types, like Kyurem-B and Weavile, and Pokemon carrying Ice-type coverage, like Mega Latias and Mega Latios. Additionally, Gliscor faces competition from the omnipresent Landorus-T, which is much more versatile due to being able to hold many different items like Rocky Helmet, Choice Scarf, and various Z-Crystals, unlike Gliscor, which must hold Toxic Orb.