This Flareon set I've had success with lately is like this
Ability: Mold Breaker
EVs: 252 HP / 252 Atk / 252 Def / 252 SAtk / 252 SDef / 252 Spd
Adamant nature
Flame charge
sacred fire
leaf blade
earthquake
Flame charge allows Flareon to burn opponents with blazing speed, outspeeding positive...