despite what keiran may think, corsola is simply not viable. He has terrible bulk, pretty much ruling out any defensive role he could play, and unlike camerupt his typing doesn't carve out a niche for him, to make up for his lacklustre bulk. He has a fairly bad typing when it comes to weaknesses; to some of the most common attacking types in NU, and is set up fodder for a large amount of things, such as Gorebyss or Absol, and especially SubSD Leafeon. Although he can hit hard with a hustle set, that is beyond gimmicky and just "lol"-worthy. Lastly, he faces a massive issue of being outclassed, as there are so many rock-types in NU that do his job better, and things like Alomomola and Frillish mostly outclass him; as well as Relicanth!
also gonna leave this here:
Swellow(guts activated) Facade vs 252/0 Corsola: 46.8% - 55.4% (2hko after SR, good chance to 2hko without)