I had already thought before about what would happen if a Siphon became an Original, in The Vampire Diaries the Siphon/Vampire Hybrids theoretically have an infinite battery of magic which is their Vampirism, so theoretically they can do any magic without many problems
Now what would happen if the Magic of Vampirism was Esther's Modified Immortality Spell as a battery, what would that do to a Siphon?