Finally after the whole process of breeding training and so on, my double battle streak finally came to an end at 240.
EV's 252 Atk/252 Spd
EV's 252 Spd / 252 Atk
EV's 252 HP / 244 Atk / 12 Def
EV's 4 HP / 252 Atk / 252 Spe
The strategy with this team is for Azelf to explode while Smeargle Endures whilst also denting the opposing pokemon. Next turn Metagross is sent out and uses the appropiate move as Smeargle Dark Voids. As long as this is done then the rest in plain sailing.
My streak ended just by poor play and a stupid misclick but overall I was pleased.