“Well, that's narrowed the field quite a bit. That rules out any cosmological reasons for your ascension.”
Mage Star Burst narrowed her eyes.
“Perhaps she's a Changeling Royal Brood, and her ascension was a transformation to hide the metamorphosis? She's already shown the ability to cast changeling magic.”
Twilight rolled her eyes.
'Again with the changeling accusations. You modify one spell and suddenly you're the queen bee.'
“'She's' in the room, you know?”
High Mages Summer Breeze and Winter Squall shook their heads.
“That is an impossibility...” Breeze started.
“...as the Ferrum Invado Spell was cast on her during a session of Parliament. Any changeling magic she was using was disrupted.” Squall completed.
Mage Merry Heart groaned.
“Ferrum Invado? They actually named it that. Ferreus Ictus would me more accurate. I knew they should have used Greek.”
The other Council members ignored his linguistical griping while Mage Broken Wand spoke up.
“If it's not cosmological, then it has to be supermagical. The Elements of Harmony fit perfectly as an explanation. Especially when the only other users of them are also alicorns.”
Murmurs of agreement came from several of the other mages.
“You can't use that as a baseline, though. It's too small of a sample size.” Mage Rolling Thunder argued.
“Nonsense, it's a perfectly resemble assumption to make. Least of all because there aren't any records of the Princesses prior to Discordian Era. For all we know, their union of the elements is what triggered their ascension.” Death Note countered.
“For all we know, Discord could have turned them into alicorns. Tartarus, he could have turned Lady Regent Sparkle into one as well. He did show the ability to remove species traits, who's to say he couldn't add them as well?” Snow Drift added.
Solar Beam scoffed.
“Discord's under six, triple redundant containment spells, a Magical Dampening Field on loan from the Griffo-Minotaurian Empire, three mental wards from Princess Luna, four dozen runes, twenty-four hour surveillance by the Night Guard, and a fifty kiloton Megaspell fail-deadly in the event of a full containment breach. If he's involved, I'll eat my horn.”
“I don't know why you're all thinking the Elements or Discord. Occolt's Razor can easily answer this. Lady Regent Sparkle is Princess Celestia's daughter.”
All eyes turned to Mage Star Burst and her outlandish theory.
'They're out of their minds. No wonder my friend's and I have to do all the world saving. The Arcane Magic Council clearly can't.'
http://www.fimfiction.net/story/92445/4/regent/arcana