[ Disease was another matter entirely, but that's not really on his mind for the current time being.

The short elf looks back over to his tall companion, looking at the eyes through the visor as they walked. The question is not without warrant. Common people barely understood magic at home, or even it's school so he's not even surprised when someone from some distant realm is asking. ]

It's meant for defense. Creating temporary magical barriers, stunning your foes. Bringing consciousness back to injured allies. That's really all that there is to it.