EN5ider 230: Villain Spotlight: Syndrathrax (5e)
A mighty CR 27 monster! While technically an ancient red dragon¸ Syndrathrax's necromantic transformations and attempted apotheoses have forever altered her. Though she shares the massive size of her fellow red wyrms she is gaunt and skeletal¸ and her scales sapped of their red luster and now bone white. Thanks to the necromantic energy that permeates her body she radiates a faint spectral glow that she can mask when she chooses - the souls of those that she has swallowed are sometimes seen struggling vainly to escape in this light.