The sky is dark, the moon is hidden, and a thick fog hangs in the air. In the distance, a faint light glows and a skeletal form takes shape. The bones of the dead begin to rise from their graves, pulled towards the light of the bone dragon. The dragon grows larger and stronger with each new bone that joins its body. Soon, it is a massive, fearsome creature, composed entirely of human remains. It opens its mouth and lets out a spine-chilling roar that echoes through the night. horror art, dark, very detailed render, sharp, 8k, cgsociety