"Good," she says, "I am very proud of you, I bet that was hard. So what this spell does is, while it's running, it lets you do all kinds of silly little things. It isn't very strong or fast or complicated, but you can control it with your will. And it lasts for a whole hour."
"It can move things - only about as well as I can move things with telekinesis, which isn't much - and change their colors, and conjure flimsy objects that aren't good for any practical purpose, and it can clean things or dinge them up again, and it can do gentle temperature effects and change the flavors of things, and most of this stuff disappears after the hour's up although cleaned things stay cleaned and moved things don't go back where they were."
"I don't know. I think a full treecycle is close to a day and there are twenty-four hours in a day. The sound illusion spell lasts six seconds for people who aren't better than me at wizardry and sixty seconds is a minute and sixty minutes is an hour."
"Do you think it will work better if I mention it before, or after you sit playing with a prestidigitation for an hour?"
"I'm - I'm going to try to think of something that works better."
"Yeah, it's not really about being quiet or even still, it's about not doing anything effortful."
"I guess effortful's not the thing either. Restful. I assume you're pretty quiet and still when you're sleeping, however little you do it, and the closer you're behaving to as-though-you're-sleeping the better."
"Well, if you found one it would definitely be a discovery because I've never heard of anyone who didn't need to rest or wait at all."
"It would be very epic. Although even without figuring out a special recharging trick you can get to the point where you can pretty much use magic all day - lots of practice to build up your reserves and making magic items to do it with when you do run low. And there's magic to make it so you need less rest, though not none."
"There's epic artificers but they still only technically count as epic if they can use their gear in a fight. You can be awesome without fighting things, don't get hung up on 'epic'."