I said to myself I was either going with a bulky Flying-type or Ghost-type to help with the weakness to Fighting-type attacks shown. I then thought...do I really want another Pokemon which is weak to Electric-type attacks and/or Stealth Rock. Decided to go with the Ghost-type; it was then a choice between Gourgeist and Misdreavus but thought about it for a while and decided to go with Gourgeist which unfortunately has more weaknesses however it resists Grass-, Ground-, and Electric-type attacks which are aimed at Carracosta, not to mention the immunity to Fighting-type attacks.
Gourgeist-Small @ Leftovers
Ability: Frisk
EVs: 152 HP / 104 Def / 252 Spe
Jolly Nature
- Substitute
- Leech Seed
- Will-O-Wisp
- Rock Slide
Great Pokemon for spin-blocking which can be useful for a later teammate when hazards are on the opposing side of the field. Has great Speed and Defense allowing it to SubSeed and wear down Pokemon to the point where they'll have to switch or eventually get taken out. Theses worn down Pokemon (from breaking Gourgeist sub) can be low enough in HP to the point where Regice after a Rock Polish can finish them with the combination of hazards. Will-O-Wisp is great for coming in against those opposing Fighting-types such as Throh and Poliwrath and crippling them. Frisk allows Gourgeist to scout what set the opposing Pokemon is running which can prove to be useful in the long run.
The thing that really bothered me is that Gourgeist misses the Speed tie with Ninetales by 1 however using Substitute on the turn it comes in and going for Rock Slide is an option. This means it won't be able to stall it out but allows it to get some damage off before switching. :/