He triggers a seemingly endless sequence of quests - however I've not seen it repeat yet and the targets are becoming more obscure... so there's some hope that there may be an eventual point to it all and not just the small coin rewards (1.5 silver approx).
The last 'quest' I had was to kill 20 defiled priests (very slow going due to the two possible spawn points near the chessboard being perma-camped), I'm currently expected to get 20 defiled keepers.