"Can't it be both?" Before either of them overthought, Loki conjured a knife and sliced Thor's forearm with it. Shallowly, if (when) Loki failed to heal it, it wouldn't even need stitches. It would heal on its own very quickly.

In many ways, it was the least severe injury he'd ever dealt his brother, and when he'd been all but invited to do his worst. It was almost a pity.