>>16215541Having 3 ghosts in a team is too much, I'd lose on of them. Chandelure is the most likely candidate.
Rotom should be switched to either Rotom-H or Rotom-W, with W being the better option. It acts as a great defensive pivot and can inflect crippling status on your opponent with only one weakness in Grass. Beware of Moldbreaker Earthquake though.
It isn't the best team but it gets the job done.
M-Gengar - Trapper/Revenge Killer
Florges - Special Wall (Go with Heal Bell/Wish/Moonblast/????)
Greninja - Special Sweeper
Aegislash - Bulky Physical Sweeper?
Rotom W - Defensive Pivot
I'd either add a physically defensive mon or a physical sweeper on the last spot, something scarfed would be preferable. You can switch Aegislash to a defensive set too (I dont see it done much though)
I'm not the best player around but these are my 2 cents