grumpy and stubborn
Battle Spot Leader
3) Ferrothorn as tank/stall. It can take tapus (except HP fire lele). But if my statement (1) is true, then I think that FWG cores or the Azumarill + Ferro + dragon, making the fairy-steel-dragon core, be common too.
like I could honestly see some people
using Occa Berry Ferro to catch it lol. or be a baller and use assault vest