Lokyar stood up, rather shakily, said "This I must do, for the safety and reputation of the school, and for the health of all.", and moved over to the injured students and teachers. He came to the first and healed a Divination major with a minor scratch on his arm, who seemed much more incapacitated than the injury would suggest; a viscous green fluid spurted out, avoided surrounding furs and hit the ground in a glob. The floor underneath it began to smoke as Lokyar staggered and caught himself and the student's wound healed.
Lokyar moved to another and repeated the Restoration to another student - this time a Destruction major with a specialism in pyromancy - with a wound dealt by a spiked mace to the chest. This time the fluid was yellow and seemed harmless till he threw a plucked strand of fur into it, sending vicious insects flying which were quickly incinerated by an alert teacher. Lokyar nearly fell this time.
Lokyar repeated the process three more times with various toxins inside the student's bodies before he could do no more and collapsed again. The healed were standing up already, and you note that there were those who hated him and liked him, hated Avine and liked her, hated authority and obeyed it, representatives of many different viewpoints in those five people.
Lokyar had worked hard to save those he could, to the point of inspiring loyalty to those who were hated by others in those who did the hating; all prejudices that remained in the face of the attack faltered with Lokyar's show of neutrality.
All those who could heal even so much as a bruise - even those healed by Lokyar - moved to help the injured; again to reinforce the point they healed even those they had reason not to. One of them carried Lokyar back over to the group, smiling.
"Because of him, people will live who surely would have died; more than those he personally healed. We didn't know of the toxins before now, and our healers will work on removing them. I have looked at him, and it seems he suffers from mild dehydration and energy over-expenditure. All he needs now is rest, and then he should be able to recover on his own," the healer said. He laid Lokyar down on a seat around the table and melted back into the crowd.
((Sorry if I rushed too quickly, I just thought it was a cool idea - especially the insect-spawning toxin - and wanted to get it out before I forgot it. Also, lol at Google Chrome not recognizing the word "pyromancy" or even suggesting anything that suggests I misspelled it. Just didn't recognize it at all.))