Entei

Entei is a wonderful revenge killer in Almost Any Ability, packing amazing offensive utility and checking many threats. Its high Attack and decent bulk allow it to fit on a lot of teams, checking a myriad of threats and being a general nuisance to opponents. Sacred Fire is an amazing STAB move, packing high power and a devastating burn chance. Refrigerate is by far its best set and can revenge kill a large portion of the offensive metagame, being able to clean easily when its checks and counters are worn down. Entei also resists Pixilate and Refrigerate Extreme Speed from users such as Lucario, further enhancing its offensive utility and cleaning capabilities. Unfortunately, it suffers from a few substantial flaws. First and foremost, it is weak to Stealth Rock and therefore needs significant entry hazard support. It also has a very subpar movepool, with little coverage, and is consequently walled by some common mons. Flash Fire Steel-types in general hard wall most sets, and Entei's shallow movepool means it is rather predictable. Many other potential sets are inferior to Refrigerate as a result. Extreme Speed also forces it into an Adamant nature. Despite these flaws, Entei is a very effective revenge killer and wallbreaker in the Almost Any Ability metagame.