Shedinja

Although its abysmal stats might suggest otherwise, Shedinja is a viable choice for any team in the VGC metagame thanks to its exclusive ability, Wonder Guard, which protects it from all attacks that aren't super effective. Unfortunately, Wonder Guard doesn't protect Shedinja from passive damage in the form of status or weather, and in conjunction with the fact that it has a maximum of 1 HP, this means that it is laughably easy to wipe Shedinja out if one has the required Pokemon on their team. Thus, it is somewhat of a gamble to use Shedinja, as it can become a dead weight in the blink of an eye. With careful planning and foresight, however, Shedinja is an effective tool against any opponent who lacks the weather and moves to hit it super effectively, and this merits its use on any team.