Okay so he has limited amount of energy he can store,
Another question comes up from the fact you have him "drain" means he needs to physically lay hands on them?
---Problem---
Understanding how night crawlers portals work would mean there is no problem with stability. The only reason he is limited is due to the saftey issue of ending up in a wall. Do you have any information for me about the dimension he passes through? I would imagine you would need to do something similar to the dark-energy theory,(I love this concept look it up for reals) You become a type of energy unhindered by anything within the dimension till you reach the bend in the "bend" And return to this dimension. *eyes spin*
I hate the concept of souls btws *thumbsup* I would have gone with the potential energy of the expected life. At least then your foundation is based in the theory of relativity and you manage to not piss off zealots. The idea of a soul is just so juvenile, and so many factors come into such a question when you say it for me. Is one soul bigger than the other? Is the age of a soul a factor on its potency? What all contains a soul? Does it have to be sentient? Why would an alien across the universe have one, Considering he is from this technologically superior race, would he not refer to souls and life and death in a different light? What if this world was set up with an atheist mind set? (AND OUT OF ALL THE DJS WHY SKRILLEX!!! XD SELL OUT 200bpm remixs his own track on the damn cd *RAGERAGERAGEIFIHEARSCARYMONSTERSANDNICESPRITESONEMOREMOTHER*****INGTIMERAGERAGE*) Dont take this as me saying anything aggressive or whatever im just mulling over how I think about a character.