concept art image of a mysterious knight with a hidden face, knight's dark suit of armor is glossy and reflective, magenta and cyan blue light reflecting off his breastplate and shoulder plates, frilled cloak billows behind him, knight is surrounded by mysterious purple flames, standing amidst chaotic environment enveloped in flames, contrasting vibrant colors, wielding an sword, deep purple aura envelops him enhancing his intimidating presence, lighting is low-key, utilizing chiaroscuro techniques to create strong contrasts, overall atmosphere is intense and otherworldly, with the neon and glowing elements adding a futuristic and mystical touch