Gorebyss

Gorebyss is one of the best sweepers in the tier thanks in part to having a great boosting move in Shell Smash, which also lets it become a potent wallbreaker, as well as a good Pokemon for rain teams thanks to a solid ability in Swift Swim, which makes up for its low Speed. However, it faces competition from Huntail as a Shell Smash sweeper, which has access to Sucker Punch to deal with faster Pokemon, and from Pokemon such as Golduck as a rain sweeper. Gorebyss's low Speed without a Shell Smash boost makes it easily taken out by naturally faster Pokemon such as Zebstrika and Simisage. Its below average Special Defense limits setup opportunities as well. On top of this, even with a Shell Smash boost, it can be easily revenge killed by Choice Scarf Pokemon such as Rotom-F and can be picked off by priority moves if in a weakened state.