User blog comment:Mangetsu20/Magic Science! (FTC - 451)/@comment-3030647-20150912234001

In regards to how the concept of "Eternity Magic" works, it isn't actually that difficult to process if you think about it. The curse is paradoxical in that it induces death but provides the person with eternal life, right? How is this eternal life sustained? How is the body not dead from six months without food or water? Oh, I know, Magic! Mavis was left in a comatose state despite Zeref seemingly killing her. I.e, the magic that preserved her eternal life is still around and continually producing magic. Only, because she's been stored in a Lacrima's, it's possible to harness the magic for more nefarious purposes.