Only something very small here, searched the forum and didn't find anything (maybe I'm not good at searching)
In Magisters Terrace leave 1 mob from each pack before the last boss alive.
Kill the rest of the pack (single target, I found it easiest to leave a few of the casters alive and it allows for some aoe)
Keep the single mob alive and attack the last boss and kill him, again single target.
After the lore at the end the mobs will run off and reset which respawn's there pack and gives about an extra 100 rep per pack.