Doesnt Blackheart have a healing factor? I read Wolverine/Ghost Rider/Punisher, and he got beated into a black puddle and rcovered from that. Probably the best healing ability in Marvel.
Blackhearts powers: Blackheart has the ability to take different forms and confuse the minds of other people, making their worst aspects dominant. He also displayed an impressive healing ability, regenerating whenever Mephisto tried to "discipline" him. Since becoming the Lord of Hell, it can be assumed Blackheart has all the powers Mephisto once held.
Mephistos powers: Mephisto is a seemingly immortal and invulnerable being capable of almost unlimited feats such as strength augmentation, size changing, levitation, teleportation, force blasts, invisibility, matter restructuring, illusion casting and interdimensional travel; however, he has very tangible limitations. His powers are at their peak in his home dimension but negligible at best on the earthly plane, though he can pull living mortals into his realm under certain conditions. He cannot read minds and is incapable of mentally controlling anyone who has not voluntarily submitted to his power, so he often relies on guile and cunning to corrupt or demoralize his targets.