It is a translation spell. It will hang out on Kaede and translate things. It's not translating things right now, Keo's just actually speaking his language and does not need his translated for her either.

"I wouldn't normally call a spell like that a permanent effect, since it can be easily reversed, but yes."

"My kind of magic can't do anything that just—sticks. Everything has a charge or is finite. A translation spell would have a time limit."

"I don't think any Elcenian magic works like that."

"There seems to be a source, though. The wizardry spells are connected to this big well of power that seems to be everywhere."

"That'd be the wizarding reservoir."

"That's the one, yes. Does it never run out?"

"Nope."

"Do you know more about what it is than 'lots of magic people happen to be able to access'?"

"Not... really. Observations of it are made but 'what it is' is not really known."

"What sorts of observations?"

"It changes somewhat in size over time in semiregular patterns."

"It has a size?"

"Yes - well, an amount."

"And it—grows, shrinks?"

"Both. There's more about this in the library, the patterns are called Tah Roie rhythms."

"No one's been able to find a correlation with anything else?"

"If this interests you the library's a better bet." They arrive at the destination and she shows him to an unoccupied room. "Korulen can take you shopping for whatever you need at your convenience."

"Thank you.—how should I, er, find Korulen, if I need her? Just show up at her door and knock?"

"You can contact me by thinking my name loudly and I can relay to her, or, yes, that."

"Right, about this mind thing, is it a species thing or...?"

"Yes, but a rare species thing, I'm the only one with my powers alive right now."

He blinks. "How many people are alive right now? Of your species, even?"

"There are a lot of dragons, but dragons of other color groups would have different powers; there's thousands of green-groups though."

"...huh. Dragons sound fascinating. What other colour groups are there?—or should I just go to the library and stop keeping you?"

She raises an eyebrow. "Blue, black, red, white, violet, and I do think you'll have the best results with the library for your various curiosities. I recommend getting Korulen to take you shopping sometime before you abruptly need sheets on your bed, though."