an angel pulsing with holy light, art by william bouguereau, mucha, lawrence alma tadema, power auras, sigils, white cloth robes, substance 3 d painter, pbr textures, physical based rendering, cinematic, hyper realism, high detail, octane render, unreal engine, 8 k, vibrant colors, smooth gradients, high contrast, depth of field, aperture f 1 2