Complex sentence: Cooper hired magician James Randi to design effects for the show, and Randi traveled with the tour to supervise and coordinate the effects, and even played a role in the stage show as "The Executioner".
Split into simpler sentences: Cooper hired magician James Randi to design effects for the show, and Randi traveled with the tour to supervise and coordinate the effects. Randi even played a role in the stage show as "The Executioner".