I can only hope that Necrolord is referring to remember his past lives and magick and not that he's lived for hundreds of years without death.
I won't assume RP until I see more posts. He may just have an ego, and many magickal practioners do! We are all very confidant about ourselves and our knowledge. He could just be a necromancer that pats himself on the back for his accomplishments and has a poetic way of speaking. Only time shall tell!