[He's never heard of "green magic," unless that's an odd, otherworldly way of speaking of the earthen element, but he supposes that if he's going to teach this magical skeleton how to heal, there are going to be a lot of discrepancies.]

The natural acquisition of magic does not necessarily translate into control, but I suppose that comes next.

[After setting one of his pieces of paper atop the counter, he rounds it to the other side and grabs a glass. After a second of hesitation, he hits it on the countertop, leaving a sharp crack all the way down it and a huge chunk shattered from its side. He uses one of his other sheets to sweep the pieces onto the glyph on the paper.]

Can you control how much magic you expel, Sans? Or does it constantly flow through you like blood?