Suicune

Suicune is one of the more difficult Pokemon to use in this format thanks to Primal Groudon and its Desolate Land. However, with the right support, Suicune can catch people off guard and take down some of the metagame's biggest threats on its own. Base 100 / 115 / 115 defensive stats give Suicune a considerable amount of bulk, and its Water typing makes Suicune weak to only two types. Suicune's limited support movepool comes in handy to create various disrupting plays like using Snarl to weaken your opponent's offensive options and Tailwind to increase your team's Speed. Suicune is one of the few Pokemon in the metagame that easily shrug off both Primal Groudon's Eruption and Primal Kyogre's Water Spout while hitting both Primal Groudon and Rayquaza for super effective damage. While Suicune plays a huge supportive role in your team, it exerts little to no offensive pressure against the likes of Kyogre and Xerneas and is completely ineffective and helpless in Primal Groudon's harsh sun. Pokemon like Thundurus can easily shut down its support option with Taunt and can KO Suicune with super effective Thunderbolts, while Primal Kyogre completely walls Suicune and KOes it with Thunder. In short, Suicune works much like Cresselia but provides better bulk in a metagame focused around the Primal Reversions and can help set up different types of speed control.