The kobold grins, and works through her meal without further distraction. When they're both done, she teleports them to the courtyard to pick up the class and bring them to the workshop.
The safety lecture runs like so:
Casting this kind of magic involves moving the patterns they saw yesterday around in certain ways so that they fit into the pattern of a spell form; moving them around is a skill, and it takes a while to learn enough accuracy with it to move the patterns you want and avoid the ones you don't; improving with the skill is mostly a matter of practice, sorry Ana.
The reason that this is a safety lecture is that miscasts are dangerous; if they aren't broken in time, they'll break on their own, which kills the caster. 'In time' means within about three days; miscast spells start acting strange on the second or third day and spontaniously break sometime at least a quarter of a day after that. (This is all in earth time; a day is 24 hours.) So, learning to cast is perfectly safe so long as you only cast on things that you don't mind breaking and do so within two days; they'll eventually want to start leaving some enspelled things intact until they start acting weird, to see how they're progressing, but that can wait - she expects it to take at least a month before any of them has a stable spell at all, and at least three before any of them can cast reliably.
The need to break miscasts leads to the following rules:
- Do not cast on people. Don't cast on animals, either, without a good reason or at least a specific plan. A spell on a living thing can't be broken without killing them. The first person they'll each be casting on is themselves, when they're confident enough to do so. Droids here might count, too; she hasn't found the time to check one yet.
- Don't cast on durable or valuable things. Common sense, really. The traditional thing to start with is sticks - the basket has been refilled since yesterday - and once they've got the hang of defining objects to cast on, there's a couple more advanced tricks that will let them safely cast on a wider variety of things.
- Keep track of things you've cast on. If you're in a situation where you might not be able to, break the thing right away.
The traditional goal for reliability is twenty-five consecutive stable spells, but it's not uncommon for new mages to wait a little while after that before casting their magic-vision spells, which is when someone is considered a real mage in her culture.
Any questions?