Reuniclus

If there's one thing that defines Reuniclus, it's Magic Guard. Magic Guard is an amazing ability, making Reuniclus completely immune to any form of passive damage. This allows it to take on defensive teams quite easily, as they rely on passive damage such as Spikes and Toxic to take down the opposing team, while Reuniclus can set up with Calm Mind and Recover. Fast offensive teams, on the other hand, have trouble with a Trick Room set that can use its low speed to "outspeed" nearly everything under Trick Room. Unfortunately, Dream World isn't very kind to Reuniclus, as it adds two major threats to it: Chandelure and Genesect. However, with the right support, Reuniclus is definitely a dangerous sweeper that shouldn't be underestimated.