Killing your own creatures, especially for a bigger bonus, doesnt seem very life-y to me. I'd change the effect to +1|+1 whenever it kills any creature, and can kill either enemy or your own. Though that may be stepping on otyugh's toes a bit. In fact, compared to oty, especially unupped, this is way overpowered. for +1 quanta in an element that has more abundant quanta, you get +4|+2 and you can take down bigger creatures without having to go. Eh...needs nerfed.