My microwave can cast a spell called "sensor reheat." I usually forget it's there, because I normally think of microwaves as having number buttons you can push to make things warm, and not things that have additional buttons that cast magical spells. I tried it out again a couple days ago, and just like it always does, it reheated my food to precisely the temperature I wanted. I don't know how it knows these things. You just push "sensor reheat," and then "start." There's no time or temperature setting. It whirs for a while, and then it stops, and then you take out your food and it's the temperature you wanted.
I'd look up how it works in the manual, but it was an open-box and didn't come with a manual. Perhaps a powerful warlock owned it and then returned it, after imbuing it with the souls of the damned in some horrifying unholy ritual. Using that button could have dire consequences of which I am completely unaware. But, until I am assured otherwise, I will continue forgetting to use it, but occasionally remembering, and being pleased with the results.