Make R8 rolls more efficient with automatic feature. Input the stats that you want on your R8 gears and System will do the rolls for you until you get the stats or you run out of PE. On weapon, you can set the amount of Atk. Level or Def. Level you want and see the magic happen. You can play with your other toons or even sleep while the roll keep rolling.
Just like the Starchart but instead of stopping until the amount of stats achieved, it stops when the stats that you want appear.