I'm currently running a home-brewed Pathfinder campaign. One of my players has a rogue who has recently started calling out for Norgorber's aid during combat. He hasn't decided to start worshipping Norgorber or committing in any way to the faith, he's just playing his rogue as young and reckless. In fact, the group is pretty much good-aligned across the board. I think he just likes making the group uncomfortable and doesn't really expect there to be any repercussions.
So last night, during a particularly hairy encounter, again this rogue called out to Norgorber to aid him right before he attacked. I figured I'd roll d100 and give him a 1% chance. I rolled a 00, so that seemed like a good enough sign for me. He dealt his normal sneak attack damage, and then I described that when he hit, there was a loud crack and a bolt of black lightning that struck the creature, and let him roll his damage again and add it to the original roll, which was enough to vanquish the opponent in a very gruesome and decisive way.
So clearly this rogue has caught the attention of Norgorber and has, in fact, received his aid as he asked for. The group saw it happen too, and they are a bit concerned as well.
So I need some ideas. Obviously a god like Norgorber isn't going to provide such assistance gratis. What kind of consequenses, side-effects, etc. should there? Again, this rogue isn't (or wasn't) interested becoming a devoted follower, he's just a bit foolish and thought that he could temp fate.