I was recently traded a 6IV Shiny Latios, but unfortunately, it had a Mild nature. I was thinking it could run a mixed set as a result of this. It's meant to surprise Heatran and Excadrill switch-ins. This is one set I had in mind, but I'm still unsure. I couldn't decide between giving it a Scarf, Life Orb, or Latiosite. Suggestions, anyone?
Latios @ Latiosite
252 SpA / 252 Spe / 4 Atk