Quoted from pascal-pinball:what do you have to do during that wizard mode?
It appears as though you are battling with the head of D.I.E. in a 1v1 fight. You have to shoot certain jackpots to lower their health, meanwhile they are "shooting" back at you via the string of inserts leading to the flippers. It's unclear though if the shots that are shooting back at you reset or not if you hit them.