Mara

A Mara is a nightmare spirit that settles on a sleeper's chest, turning breath shallow and familiar rooms impossibly distant. It may appear as a thin woman, a crawling shadow, or a weight with no body at all. The Mara feeds on helpless awareness and returns to victims who begin fearing sleep itself. It prefers secrecy and flees when the room wakes together.

Nightmare Weight: one creature within 20 ft makes a Mind save or becomes held and takes 1d6 psychic damage at the start of its next two turns. An ally can shake it free.

Wake the Room: three creatures speaking the victim's name during the same round end Nightmare Weight. Dawn light reduces the Mara's DR to 0 and prevents it from hiding.