Larvitar

Larvitar has a great offensive STAB combination that is virtually unresisted in LC. It also gets Dragon Dance, a great setup move that boosts its Attack and Speed. Larvitar also has an amazing ability in Guts, meaning it can easily absorb Will-O-Wisp and Toxic, as its typing makes it immune to Thunder Wave.

While Larvitar's Rock / Ground typing is great offensively, it is horrible defensively. Larvitar is 4x weak to Water- and Grass-type moves, as well as 2x weak to Fighting-type moves, which run rampant in LC. Although Larvitar gets Dragon Dance, it only hits 14 Speed with a Jolly nature, which means that it is outsped by common Choice Scarf users, such as Pawniard and Mienfoo. It also faces competition from common setup sweepers such as Tirtouga and Omanyte, as they have a better boosting move in Shell Smash and better bulk. Lastly, Larvitar needs Flame Orb to ensure that Guts activates, but it is frail without Eviolite's bulk.