Soul Eater

When a creature within 30FT of you is reduced to 0 hit points you may consume that creature's soul. If you do the target dies and can't be returned to life by any means short of a wish spell. If you do you can either regain a number of hit points equal to the target's hit point maximum or if your class has a currency (Sorcery Points, Superiority Die, Ki Points Ect) you gain a number of those equal to half the targets hit point maximum if you do this then ignore the maximum number of that currency that you can have, but can't gain any more of this currency until you are below the maximum of your currency.