You called out to the other planes for aid in your current struggle, invoking wicked magic. The ritual was not done properly, and you instead summoned a demon to your service. Barameus.

The portal to hell opens and the muscular, tall, goat-like form of the demon arrives, taking in the sights of the mortal plane. He turns to you.

Why have you summoned me? Am I to destroy your enemies? Bring you pleasure?