Deadpool: Sins of the Past #1

Black Tom is dying from his wooden infection and Banshee has Dr. Killebrew, a specialist in cellular regeneration, treat him in prison. Juggernaut breaks in, rescues Tom and captures Killebrew. Deadpool is out for a quiet drink when he is assaulted by Black Tom's goons but he gets a timely assist from old pal Banshee and his daughter, Siryn. During the battle, Deadpool's hand is cut off and he blacks out as his healing factor fails to regenerate it.