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Night Hags are incredibly evil creatures hailing from the Fiendish Planes.

They are known for their mercilessness and ability to walk in the dreams of others. In the fiendish planes they are powerful creatures, being the creators of the process that creates altraloths, powerful unique yugoloths, but much more commonly known for being able to harvest soul larvae which are used as currency in the Abyss, Blood Rift and Nine Hells. They also have an affinity for nightmares.