In a dimly lit chamber, a dark mage stands at the center, surrounded by ancient runes that glow ominously. Tendrils of shadow swirl around him, coalescing into eerie, ethereal creatures with glowing eyes and elongated forms. The atmosphere is charged with dark energy, as the mage raises his hands, channeling power from a looming, crescent moon outside. Wisps of smoke curl towards the ceiling, enhancing the mystery of this arcane ritual.