Umbramancy

A school of concept, umbramancy is a branch of magic which focuses on spells relating to shadows and darkness. It overlaps with nyctomancy, and opposes lumomancy.

Examples of umbramancy spells include shadow scrying, teleportation through shadows, and melding into a shadow.

The overlap with nyctomancy comes from nyctomancy’s focus on the night and darkness, while the opposition to lumomancy is based in the natural opposition between light and dark.