I wouldn't call that a good set because Overheat kills off your Calm Mind SpA boosts and it takes too much time for Chandelure to get them back up again. Fire Blast or Flamethrower, however, are good replacements. Pain Split is kind of okay to get HP back, though it's a bit unreliable.I thought up another pretty good move set too.
Chandelure @ Shadow Tag/Focus Sash
Shadow Ball
Pain Split
Calm Mind
Overheat
EV's:
252 @ Sp. Attack
252 @ Speed
4 @ Sp. Defense /w/ Modest nature
Tell me how I did :naughty:.