A special Flying–Tera Type Decidueye with the Mightiest Mark is now available in Pokémon Scarlet and Violet through limited-time 7-star Tera Raid Battles running until May 21 at 4:59 p.m. PT. The event gives players a chance to battle and catch one of the toughest raid bosses currently available in the games, with Decidueye featuring enhanced stats and the exclusive Mightiest Mark title. As with previous 7-star raids, trainers will likely need carefully built teams and coordinated strategies to clear the encounter efficiently before the event rotation ends.
Source: Official Pokémon website and Pokemon.com