Judging by the first post snippet, the difference was that Koschei knew his wand from his ... elbow, when it came to making himself immortal, while Voldiepants was a 15yr old who read a few cryptic lines in a manuscript too vague to be called inaccurate, decided he knew *everything,* and set about waving his ... elbow. Most likely he rubbed an Etherial force off his soul that go, and lost that small fragment that eventually develops in most people by 25 or so to tell them, "No, wait, this is a bad idea."
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows