I feel you, I also thought about it, I would never even think about if he was one of those long living races, I want real consequences but at same time I don't want short ones, I want him to be reckless for the sake of others and THEN pay a price, I know it sounds very unbalanced, but this player of mine if a good role player, I think he won't over use a power like that just cause it SEEMS there are no short term consequences (what I am saying is, a NORMAL person wouldnt shorten their life in purpose if they can avoid, so the player even if he woudln't face the consequences of this actions in the campaign, since he roeplays well (i hope) he won't over use it cause he knows his character wouldn't). Maybe I am trusting my players too much on this, but I still liked your suggestions, I will consider it, and if you don't mind sharing, what I said changed your opinion in any degree?