Starmie

Starmie has several valuable assets that allow it to function effectively in OU, whether it's playing an offensive or supportive role. Access to Rapid Spin, a great move with limited distribution, coupled with a solid defensive typing and reliable recovery allows Starmie to reliably remove entry hazards against many teams due to its ability to force many switches. Such a role is further cemented by its excellent Speed stat, which allows Starmie to outpace most of the unboosted metagame. Its wide offensive and defensive movepool means it can be catered to its team's needs easily while having a limited number of switch-ins due to its wide coverage options. Starmie also has two good abilities that it can put to use, with Natural Cure being a godsend on defensive sets, reducing Starmie's vulnerability to status ailments, and Analytic giving it the power to truly threaten some of its switch-ins.

However, there are a few drawbacks to using Starmie, the chief of which is that while its typing is strong from a defensive standpoint, its actual bulk is little better than average, meaning it can struggle to take repeated punishment from common offensive Pokemon such as Keldeo, particularly if it is attempting to use Rapid Spin. A flaw to Starmie's otherwise strong typing is a Dark-type weakness, which means that Starmie is liable to being Pursuit trapped and removed from play. This can somewhat be remedied by Reflect Type, but this requires strong prediction and uses up a moveslot, thus reducing Starmie's available options.