CHICAGO — A few hours before their franchise-altering night, the Orlando Magic made a rare change. Jeff Weltman, president of basketball operations, was scheduled to be the Magic’s on-stage representative at Tuesday’s NBA draft lottery. Before it started, however, coach Jamahl Mosley told Weltman he was “feeling a little lucky” and asked if he could replace him on stage — a unique switch. Weltman agreed. How much did that impact the Magic ultimately winning the lottery and securing the No. 1 pick in the NBA draft for the fourth time in franchise history? As Weltman put it, “it didn’t hurt.” Th…