"Shut up. You've never been any good at magic." And this wasn't just a matter of not being good at it, it had always been all but an inability. Barring one or two very minor healings, the best Loki had ever managed was doing nothing. The worst had been... worse. It was all very well for Thor to say 'just try something'.

But he did have to try something. Start with the basics, Frigga had repeated over and over, so Loki tried twisting his magic into the configurations that were supposed to heal minor injuries.

When the edges of the knife cut turned green, and not just magic settling in, he stopped. "Damn."