Tales of Tolgard
The trilloch is a creature of pure negative energy that sustains itself on the life force of dying creatures. It uses its powers to accelerate the dying process, thereby drawing sustenance much quicker during its “feeding.”
The trilloch is completely invisible and cannot be detected by normal means. A see invisibility or detect magic spell reveals the creature’s form and aura which appears as a swirling, ever-changing, volume of darkness interjected with swirls of sparkling light.
A dispel magic cast on or within 10 feet of the trilloch causes it to retreat, moving at a speed of 50 feet per round for a number of rounds equal to the caster’s level.
No other magic, and no known weapons, harm a trilloch.