The plane crash mystery

You go back and step into the portal. You feel a tingly feeling as you step between two worlds. Suddenly the sky becomes dark gray and you look around. Everything is dull except one bright house off in the distance. That is where the Black Bargainer lives. You decide to risk your life and go into the small house. Inside, the house is HUGE. Enormous pillars hold up the ceiling and intricate pillows with golden thread are scattered on the floor. The Black Bargainer is sitting at a table made from the finest of wood, scribbling out what looks like a plan on a piece of paper. He looks very powerful, so you back away from him. He whips his head around, and stares at your blank face.You start a big argument, and eventually after lots of threatening you finally agree to battle. If you win he will leave it up to you. You don't quite know what he means by that but you go with it. If he wins you will die and he will get his way. A horn blares and the battle has begun. What do you do?