Well, my method is unique. I have Matthew and Tyrell to attack and Sveta and Amiti to back them up and heal them. I sometimes replace Sveta with Karis (for the Fresh Breeze series) and Amiti with Reif (for the Wish series). I killed between 40 and 75 of each ball. I went from about 55 to about 65. I gained well over 1000000 experience. I actually just finished doing that again. Took me like 6 hours, but I killed - exactly - 655 balls. I got 4,098,112 experience and 116,016 coins. Matthew jumped from Lv. 56 to Lv. 85. THAT'S why the Star Magician is my favorite boss!