Magneato.

You've got a really interesting and fleshed out setting here, matey, though I do have a couple of questions. What are vegetation levels like? Is it all dusty-sandy land or has flora started to make a comeback? What about buildings and stuff left over from Pre-Fall. Are there some that still stand? Can you happen across technological relics leftover? Are guns and weapons common, or do people mostly use whatever they can get their hands on? 

Also, would an Immortal who can make use of his own blood, i.e. shape the stuff, float it in air, meld it into a sharp weapon make sense? And what do you mean by eye mutations? Do they have to be a certain pure color?