Looking at her magic stores with her mind's eye, Faeron was very confused. On one hand, her stores seemed to be soaked in flux, and she'd probably get a nosebleed trying to fix it. On the other hand, the flux kept on purifying itself for a few seconds at a time, before tainting itself again.
She was getting concerned about the potential Warp effects she'd get from this.
"I'm sorry, what did you say?" The purple horse creature spoke again. Faeron glanced up at her and shrugged, grimacing.
"My magic keeps switching between 'in flux' and 'pure aura', I have no idea why, and I'm getting a headache trying to think of the implications."
The purple one blinked a few times. "Okay, I assume 'flux' is as in 'instability,' which wouldn't necessarily be good, but what was the 'vis' thing you mentioned?" She asked in a curious tone.
Ah. So they, or the purple one anyway, didn't do thaumcrafts.
Faeron paused for a moment to think, then replied, "Vis is essentially pure aura. What happens when an aspect is separated from its object and purified." She suddenly noticed that the necklaces each being was wearing, or a large tiara in the case of the purple one, each contained an vibrantly shining aura node. "And it occurs naturally in aura nodes, like the ones you're wearing. Uh, you might not be able to see them though."
She raised a hoof and pointed at Pinkie Pie's necklace, her being the closest. Pinkie promptly looked down. The purple one's horn lit up, levitating the crown off her head and onto a raised hoof, frowning slightly after a moment of study.
"No, not really, unless 'aura nodes' look like gemstones...?" she asked. Faeron shook her head.
"Nodes look like little sources of light, just a small glow, at least to normal eyes. Mine aren't exactly... normal, though." She focused a little on dilating and narrowing her pupils, irises sparking as she did so.
Pinkie Pie leaned over a little to see, and the purple one put the crown back on her head to walk forward a few steps.
"They're slit, like a cat's. Are you nocturnal?" she asked. Faeron took a moment to think on that.
"Possibly? I sleep when I need, but the End doesn't really have a 'day'. It has no sun."
Everyone in front of her froze. Some of them actually started gaping. The purple one twitched a little. "Okay, define... End. Is it a time or a place?"
Faeron only needed to register the question before she knew how to reply. "A place. It's the name for my home, a dimension of void with some islands floating in it." She paused before adding, "it's not the most hospitable place besides the few inhabited areas."
The purple one blinked and looked like she was about to ask another question, when one of the others in her group nudged her.
"Twi, shouldn't we be sending a letter to the Princess now that Discord's a statue again?"
Twilight blinked. Right, she'd forgotten that. She should probably go and get Spike and- Spike!
"Rainbow Dash, could you fly to the library and make sure Spike gets some stomach ache medicine? Princess Celestia sent all of my friendship reports through his fire, and when I left he wasn't feeling well..." Twilight's ears flattened. "I should probably have helped him but I was too focused on helping all of you."
Rainbow saluted and flew towards the Golden Oaks. Faeron watched the rainbow contrail fade with clear curiosity, and Twilight looked at the rest of her group of friends, sans Pinkie, who was still standing next to Faeron.
"If any of you have anything you'd like to do, we can meet back at the library in an hour." Twilight said. Applejack thanked her and started heading towards Sweet Apple Acres, and Rarity started on her way to Carousel Boutique. Fluttershy hesitated before making off in the direction of her cottage.
Pinkie Pie, surprisingly, stayed where she was. Although, maybe she didn't, there was a dust trail... Twilight raised an eyebrow at her, to which the pink mare shrugged.
"The Cakes were still in Sugarcube Corner when we left last time, and I can't check on everypony in Ponyville, so... I'm good!" Pinkie started hopping in place. "Library?"
"Library," Twilight nodded. She turned a little to look at Faeron. "Could you come too? I'd like to ask you a few questions," Twilight said. Pinkie nodded vigorously.
"Me too! Like, what's your favourite food?" Pinkie asked, bouncing in the direction of the library as Twilight started walking. Faeron hesitated for a split second before following.
"I'm not too sure what my favourite food is. Apples I suppose. This place is called Ponyville?"