LBE – minimal balance changes for Heroes V 3.1.

No, 5 is too much – compare it to Shock, Resurrection, Vampirism, etc. The current regeneration for 3 (maximum for 4) is a good idea, and the concept of regeneration without resurrection is interesting (I've thought about it myself, but I don't know how to implement it). Also, this would significantly change the essence of the spell and reduce its importance.