Starlit Specter

Beneath the looming silhouette of a crumbling Wizard's tower, an ethereal wail cuts through the night, sending a chill down the spine of any adventurer unfortunate enough to hear it. The Starlit Specter, a tragic embodiment of lost astral explorers, haunts this desolate place, its form flickering like distant stars in a voidof darkness. This specter is a rare sight even for the most hardened of monster hunters, its essence woven with the otherworldly energies of the cosmos themselves.
It flits soundlessly through the moonlit corridors, passing effortlessly through stone and mortar as it seeks to sate its eternal hunger. At a glance, it appears as nothing more than a shimmering patch of night sky, indistinguishable from the tapestry of stars above. But under the scrutiny of the brave or foolish, it reveals a terrifying visage - a shifting silhouette filled with distant galaxies, a ghostly panorama of the infinite cosmos.
Its touch carries the chilling void of outer space, draining the life energy from those it preys upon. The spectral entity doesn't discriminate - it hungers for all forms of life, seeking in vain to fill the empty chasm of its undead existence. Even the bravest heroes may find themselves turning heel when the specter releases its Astral Scream, a haunting echo of cosmic loneliness that resonates painfully within the mind.
But even this creature of darkness and stars has its bane. Intense light, the brighter the better, disrupts its form and hinders its otherworldly capabilities. A well-prepared adventurer armed with spells of daylight could turn the tide in their favor. The specter, though formidable, is still a prisoner of its own form, chained to the darkness it relies on for stealth and camouflage.
Such a creature promises an encounter like no other. To face a Starlit Specter is not just a test of arms and arcana but also a grim reminder of the dangers that lurk in the arcane frontiers of astral travel. So Dungeon Masters, if your party is growing complacent, and they find monsters of the mundane world lackluster, introduce them to the Starlit Specter, and let them face the chilling terror of the astral undead.