Tapu Fini

With its wonderful defensive typing and incredible ability, Tapu Fini is an immense support presence in the tier, being able to check threats like Ash-Greninja and Kommo-o and give its offensive teammates a layer of protection against opposing status. Its great utility movepool includes Defog, letting it clear entry hazards from the likes of Heatran and Ash-Greninja as it threatens them out, and Taunt, which allows Tapu Fini to pester defensive Pokemon like Chansey and Toxapex and further help it in preventing hazards. It can also give hyper offense teams a headache with an offensive Calm Mind set, forcing through the likes of Volcarona one-on-one with boosts. However, Tapu Fini's fatal flaw is its complete lack of consistent recovery, giving it a total reliance on its item for healing and subsequently a vulnerability to Knock Off, meaning it doesn't want to be tasked with handling the otherwise-walled Weavile. Additionally, being a grounded user of Defog has the downside of needing to take, upon switch-in, Stealth Rock, Spikes, and, worst of all, Toxic Spikes, which activate before Misty Terrain and ruin Tapu Fini permanently. Lastly, Tapu Fini isn't entirely safe to switch into Greninja and Kommo-o without prior scouting, as it can be nastily surprised by a Protean set wielding Gunk Shot from the former and Electrium Z or Poisonium Z sets of the latter.