Victini

Victini is one of the better offensive Pokemon in the tier due to its high-Base Power moves and unpredictability, being able to attack with both physical and special sets and to run multiple viable abilities, such as Desolate Land, Tough Claws, Sheer Force, and Tinted Lens. Though its Attack is average, the boost from its abilities, as well as the high Base Power of its moves, allow it to hit hard. Its bulk is decent enough for an attacker, allowing it to take a hit if need be, and it has a decent typing that allows it to switch into common moves such as Focus Blast, Psyshock, and Pixilate- or Refrigerate-boosted Normal-type moves. It can lure in standard answers to its more common physical set with a Sheer Force special set if need be.

However, Victini is weak to common Dark-type moves such as Pursuit and Knock Off, the former of which is problematic due to V-create's stat drops forcing Victini to switch out a lot, and the latter of which weakens Victini by removing its item while still dealing a lot of damage. It also has no reliable way to get around Flash Fire and Primordial Sea users. Lastly, it has a weakness to Stealth Rock and is vulnerable to all other entry hazards, which is a very big problem for the same reasons as Pursuit.