You had been backed deep into a cave system. There was a werewolf after you. As you're backed into a corner, you raise your crossbow. Pulled back as far as it'll go, you shoot it at the beast. The silver-tipped arrow digs just far enough into its head to fell the beast. It falls over with a thump. Much to your horror, a small portal opens. You can see the red glow of the moon reflected off of the cave walls. Finally, he steps through the portal. Its Hircine himself in his buff, dear concealed face, glory. He looks down at you, his grip on his spear growing relaxed.
Hircine: "What a hunt. I had come to hunt that werebeast myself. But it seems its prey turned the tide." He offers his hand to help you up. "Perhaps you'd like the opportunity to be my prey. Or I could give you an eternity in my hunting grounds. What say you, mortal?"