Salac Berry on Hydreigon isn't worth it, you will be outsped by faster scarfers anyway and you want to actually be able to tank hits with it at time. This team has no switch-ins to Spectrier (no, AV Melmetal will not work for the whole match especially since it's your only Fairy, Steel and Flying resist). Bulkier Hydreigon would make more sense. Shock Wave on Pheromosa just for Pelipper seems like a waste. Poison Jab for fairies seems way better. Why run Fire Blast on an SD Garchomp? What takes more damage from an uninvested Fire Blast than from a plus 2 full attack EQ/Scale Shot/Stone Edge? Why Surf over Scald on Fini?