Rupture

Rupture is a slow but steady source of strength when combined with powers such as combust and brutality. It also works with curse damage (to great effect with Pain) and burn damage. I would never pick this card without having a single source of self damage already, and ideally you have two or three. The main benefit to this card is that it is inexpensive 1 compared to something like demon form; however demon form is much more reliable, consistent and does not require support from other cards. Be aware that Tungsten Rod can prevent all damage from Combust and Brutality, preventing strength gain.