Domestic Dispute
Got a Warden type who spent all his skill points on making a really nasty combat build, so he was ready for everything? Well, most of the time you should keep them amused with combat scenarios to make them feel useful and powerful. But every once in a while through them a reminder that not all police work, in fact, very little police work, is about running down criminals in darkened alleys and having a shootout with them.
Maybe it is the coven of practitioners who are having a schism, and are having a squabble over who keeps the sanctified ritual space, or the coven's supply of potions and charms that they crafted together. Who owns what? Well, when things were going well, nobody really cared. But now all sorts of accusations are going forth, because Raven spied on Megan with Zorsha's crystal ball and saw her with Dark Steve, and Alex disrupted Melody's ritual, that she had been working on for months, because Alex thought the carefully arranged cobwebs were, well, cobwebs...
If you are really lucky, some dark malign force might be involved, setting the coven against each other for their own dark amusement. But if not, emotions are running high, and most of them have access to curse magic and other nasty petty ways of getting revenge. Oh yeah, and the really vindictive want you, the Warden, to destroy their former friend who betrayed them.