Human: Generate for a spooky scene outside a town keep with crystal and spikes. Assistant: 
Nebulous swirls of crimson mix with the glowing diamondique of the wall that encircles the Great Tower. Jagged spikes of crystal jut up all along the rim of the protective structure, twinkling with the dangerous beauty of a starry thorn. A careful trick of the light bends and twists the red traces within the translucent material, causing them to form faceless figures with mouths open wide in a rictus of torment that seems like no trick at all.