Horned Knight's Teal Glow Illuminates Tattered Cloak in Dark Fantasy

a detailed digital painting of a dark armored figure with large horns, surrounded by glowing teal energy. the character is positioned in the center, wearing ornate dark plate armor with a tattered cloak. intense teal light radiates from the armor joints and helmet. the knight holds a long curved sword pointing toward the lower left. teal smoke and sparkling particles fill the dark background, casting a vivid glow on the figure and the ground. the style is dark fantasy with high detail on the textures of the armor and the fluid motion of the magical energy.