Vampiric Regen Aura

[the_matrix_walker]

Originally Posted by the_matrix_walker

And to affect something without touching it, you need Malediction 2 (and possibly Ranged).

But wait, Kromm has given us an easier way....

Originally Posted by Kromm

I think you could approximate it fairly well with Leech given Cosmic, +50% to let it ride on any attack, not just a grapple, and a small Accessibility limitation that restricts total HP healed to the damage delivered by the attack. You'll need other modifiers to get the timing, rate of return, etc., right, but those two should give you the necessary effects.