Okay! I warn you, Legion's personal headcanon incoming! It will take a bit to type up, since there's a lot to explain, I'll do it at some point when I'm not under the effects of school. That is to say, could possibly be forced off iPad at any time. ^^ I mean you probably won't use it, since Legionverse =/= EightStarverse very much, buuuut it'll be fun to explain anyways!
I'm sure it'll be a great addition to the Compodium!! I've been adding lots of cool weapons to it, and I think King Sombra's horn definitely deserves a place. @Winter Snow, what are the Elements of the Ancients?
Well, it's from my belief in brothers of Celestia, Tremalion and Heculius as I call em. They are several different representations like Light, Darkness, Power, Luck, etc. Just find an old LOCP thread to learn more about then
Don't describe it like that though, they've already confirmed that Celestia and Luna have no more direct siblings. The items themselves sound pretty cool though.
Alright, they could just be some old relics that hold similar power to the Elements of Harmony or something
Hmm... Thinking of more... Emergency ball? (Incase of Cerberus attack) Zecora's fix it all potion? Hearts Desire plant. Poison Joke. Statue of Discord?
If we're going to use Roleplay items, I'd like to add the Necroequicon from The Shadow Over Ponyville to the list. Like the Necronomicon, except written by a pony. Contains powerful spells that are written in Deep Draconequine and exudes energy that can potentially reduce the holder's Willpower.
All of these are great entries!!! Now I'm just embellishing a bit, but if you can think of any more cool Spellbook titles, or interesting equipment that a pony could use in their travels, I'd be happy to add them as well.
Now that I think of it, salt was mentioned as an intoxicant to ponies when they went to Appleloosa. Maye you can throw it in there with the other fun drugs.