Rebirth spell is awesome! Especially combined with adrenaline. Only problem is, that on real difficulty lvls, PCs that are dead dont get experience. So ye. It ends up being kinda lackluster. You do alot of damage, press rebirth and then, the rest of your characters try not to kill anythning for a turn, coz if they do, u dont get that exp.
Shuld it be like that? i dont thik it was intentionall by the creator, so i write.