Katri blinks at him. :...I'm curious but I feel like I should think of a difficult thing to try doing to test it properly? Also that's another thing I don't know if any of our magic could do even in principle. Maybe Mindhealing but I think it'd have to be - specific, the Mindhealer would have to know someone and what they usually got stuck on, there's not a Mindhealing technique you can just toss at anyone that does that.: 

She considers it. :I guess I could ask my Companion to give me a math problem and try solving it, or something? How long does it last?: 

:Just a minute if you don't use it, but it can work on things that take longer than that.:

Why??? That's even weirder! It would make sense if it only worked once, you can set spells with a trigger to fire, and it would make sense if it only lasted a fixed duration, but it's bizarre for it to be triggered by a certain action but the trigger exists for less time than the rest of the spell does! 

Katri is game to try it, though, and then receive instructions from her Companion for the sort of slightly complicated math problem where she tends to always get herself confused, and see if the spell helps? 

Guidance!

There's a subtle feeling to it, an affordance to be just slightly better at - something. It would be pretty easy to spend by accident but since she's paying attention she can apply it to the math problem.

It's pretty subtle - it doesn't make it effortless, it doesn't really make Katri feel like she's suddenly better at math - but she does feel a little sharper than usual, a little more like her intuitions are working rather than just getting her turned in circles. It's not gamechanging or anything, but she can definitely imagine ending up using it all the time if it were a motion she had right there and could do unlimited times. 

She solves the math problem, and grins briefly. :That's neat! Do you use it often?: 

:Usually hundreds of times per day.:

:Wow. That must be really useful.: Katri isn't sure she would want to use it that many times, but - dozens for sure. And probably it would be even more tempting if she didn't already have the option right there of just wordlessly asking her Companion for help or advice. :...Do rulers and people who make a lot of important decisions get someone with god-magic to follow them around and cast it for them hundreds of times a day? I feel like maybe politics would go better if we had that here.: 

:There's more powerful magic available for people at that level of wealth and power! I guess a lot of it would cooperate with Guidance, but I don't actually know of it being a commonplace to have a cleric follow a king around and tap them with Guidance constantly.: