Drifblim

Thanks to its ability Unburden, Drifblim is able to fill a tiny niche in the PU metagame as a sweeper able to outspeed common Choice Scarf users such as Primeape and Kabutops. This is further bolstered by its access to Calm Mind, turning it into a threatening Pokemon thanks to its Speed and offensive capabilities. Its access to STAB Shadow Ball in conjunction with Hidden Power Fighting gives Drifblim unresisted coverage against the tier. Another aspect that makes Drifblim a threatening sweeper is its unorthodox way of setting up, which can be difficult to deal with when using an offensive team due to their lack of specially defensive Pokemon or faster Choice Scarf users. Despite these attributes, its weakness to common threats such as Lycanroc and Skuntank, which carry priority moves in the form of Accelerock and Sucker Punch, as well as an exploitable Speed prior to consuming its Sitrus Berry makes Drifblim susceptible to various threats such as Haunter, Oricorio-G, and Alolan Raichu. Another aspect that heavily reduces Drifblim's viability is its proneness to being walled by specially defensive Pokemon such as Lanturn, Eelektross, and Cryogonal as well as physical walls such as Regirock and Mudsdale. Drifblim is simply not able to break through these Pokemon unless it has managed to boost up its only decent Special Attack, it has weakened them enough, or the player has managed to remove those threats entirely beforehand. Drifblim also suffers from stiff competition from Ghost-types such as Haunter and Golurk as well as Flying-types such as Dodrio and Oricorio-E, all of which offer more immediate power, greater sweeping potential, or simply better utility.