The old Howser Magic was back on Saturday night for the Florida State baseball team. And Jamie Arnold took full advantage. The Seminoles’ star left-hander was magnificent for seven innings, Brennen Oxford was exceptional in relief, and FSU is now one win away from a spot in the Super Regionals after a 5-2 win over Central Florida before a loud and raucous Dick Howser Stadium on Saturday night. Florida State (44-15) will play either UCF or Stetson on Sunday at 6 p.m. for a spot in the Supers. Whoever wins the elimination game would have to beat the Seminoles two times in a row to advance. “You …