Land spirits that guard places, families, farms, coastlines, and regions; often better treated as powers to respect than monsters to kill.
Landvættir are one of the best ways to make the land itself feel inhabited. They can belong to a hill, waterfall, lava field, grove, harbor, or whole district.
Icelandic tradition treats landvættir as protective spirits of the land. Respecting them preserves luck; offending them can make a place hostile.
Use landvættir as local powers, patrons, offended guardians, or explanations for why some places must be approached with ritual care.
DM-only encounter details, stat blocks, and running notes are kept at Landvættir (DM).