Ability : Shadow Tag
EVs : 252 Sp. Att, 252 Sp.
Nature: Timid (-Att +Spe)
Toxic - I usually use Will-O-Wisp because MY Chandelure has a nature that loosens its Defense stat, but I'd choose Toxic, which is great unless you're battling a Steel type, but you're a fire type. Duh.
Flamethrower/Fire Blast - depends what item you'll be using, if you're using an item that boosts you're accuracy, go with Fire Blast, but if you're not use Flamethrower. But these 2 attacks have 2 things in common-High Power, STAB.
Energy Ball - Good Power, High Accuracy, covers Rock, Ground and Ice type weakness.
Hex - High Power when used with Toxic/Will-O-Wisp, High Accuracy, STAB.