Excadrill

Excadrill is backed by a great Attack stat, solid typing, and access to two fantastic abilities in Mold Breaker and Sand Rush; the former allows easier spam of its STAB Earthquake, allowing it to hit Levitate users such as Rotom-W, Gengar, Latios, and Hydreigon, while the latter gives it tremendous Speed during a sandstorm, allowing Excadrill to outspeed the entire metagame and potentially sweep unprepared teams. On the defensive side, Excadrill has mediocre bulk, meaning it has a hard time switching in against powerful attackers. Additionally, because Excadrill is weak to common priority moves such as Aqua Jet and Mach Punch, it is fairly easy to pick off. However, due to its Steel / Ground typing, Excadrill can take advantage of a predicted Thunder Wave or Toxic and switch in for free. Excadrill's most powerful attribute, being one of the fastest Pokemon in the game during a sandstorm, is severely hindered by its poor defensive synergy with Tyranitar and Hippowdon, the only two Pokemon with access to Sand Stream, as they are all weak to Water moves and Excadrill also shares a Ground and Fighting weakness with Tyranitar. For this reason, Excadrill best works as a revenge killer by making use of its great Speed while holding a Choice Scarf and using its powerful Earthquake to finish off a weakened team.