Pain train manifests as one of those elastic strings with a ball at the end that you strap to your head to practice punching, Dartmouth can then punch the ball and continue punching it to manifest larger and faster and further “force” fists, large invisible fist constructs. The more and more he punches the faster and more difficult pain train becomes to control, but the larger, faster, and further his force fists become. It has the potential to deal infinite damage with infinite effort