Gigalith

Gigalith is the sole viable sand setter, enabling Sand Rush users like Sandslash and Lycanroc and racking up chip damage against defensive staples like Xatu, Sylveon, and Talonflame, as well as the opponent's team in general. Gigalith's great all-around defensive stats allow it multiple opportunities to set up sand. Furthermore, it can check Salazzle and Talonflame while having utility with moves like Stealth Rock and Toxic. However, its abysmal Speed usually means it must take a hit before moving. When combined with damage on the switch, status, and no reliable recovery, Gigalith can be worn down deceptively quickly, especially since it's weak to STAB or coverage moves from Pokemon such as Toxicroak, Exploud, and Diancie. Gigalith is also difficult to teambuild around due to almost exclusively fitting on dedicated sand teams, and these teams demand extensive support to execute a successful sweep.