Create a dark fantasy winged circlet-style helmet made of blackened metal with light toxic-green cracks. The front should remain open-faced like a regal crown, with a small central plate above the forehead containing two glowing green eye-like gems. Add large jagged metallic wings on each side made of layered, damaged feathers with faint green energy in the edges. Include a shattered emerald crystal in the center crest glowing with corrupted power