Hydreigon

Hydreigon packs a great Special Attack stat which ties in nicely with its vast array of coverage choices. Hydreigon's Dark typing sets it apart from other Dragon-type Pokemon, as it can handle Pokemon such as Cresselia, Aegislash, and Bisharp better. Hydreigon can also support its team with Tailwind. Levitate makes Hydreigon immune to Earthquake, which, in conjunction with its typing and decent natural bulk, gives it quite a few switch-in opportunities. The biggest drawback to Hydreigon is its base 98 Speed. Because of it, Hydreigon finds itself slower than a variety of common offensive threats such as Mega Kangaskhan, Mega Charizard X, and Terrakion, so its team needs more speed control. Another drawback is the Special Attack drop caused by using Draco Meteor.