A mystical and dramatic scene featuring Gwelyn, a witch with long flowing hair, wearing a deep violet dress adorned with golden embroidery and a tall pointed purple hat. She is standing in the grand hall of Hazufel Castle, surrounded by intricate gothic architecture, glowing chandeliers, and mystical artifacts scattered around. The atmosphere is dimly lit with a magical ambiance, as beams of moonlight pierce through stained glass windows, casting ethereal patterns across the floor. Gwelyn is holding a glowing magical staff and gazing intently at an ancient book on a pedestal, her expression a mix of wisdom and mystery.