Castle Brie's Puzzle

You enter another circular room, but the ceilings are raised at least 30 feet in a dome shape. A pair of small vaults bulbs dimly light the center of the room where the wooden floor gives way to a giant iron circle. Storm clouds begin to form overhead in the dome ceiling, crackling and flashing with light. The metallic floor raises back up, revealing a giant, warred body connected to all three heads. Castle Brie here makes everything so much simpler.