While the usage of magic varies greatly depending on the nature of the caster, some principles of magic seem to be universal.

Black magicEdit

Black magic, according to Nightingales definition, is the use of magic in a way as to cause a breach of the Queen's Peace.[1]


Glamour (or Compulsion or Seducere) is a way for magical creatures to make others do what they want.[2]


Lacuna is a spot with a noticeable higher amount of excess magic.[3]


When you take part in food or drink at the home of a person with magical powers, you might be put under obligation to that person.[4]


Potentia is a word coined by John Polidori, describing where magic comes from.[5]


A ritual, unlike spells, not only contains forma but also the use of certain paraphernalia to help the process.[6]


Signare is the individual signature of individual practitioner's spells.[7]


A spell is a series of forma attatched to bring about an effect.[8] Different countries and regions have different traditions and spells.

Vestigium Edit

Vestigia is described as an afterimage, and can manifest as feelings, smells, tastes and sounds. Intense vestigia can be created by magic, but all living things seem to create some amount of it.[9][10]

Peter Grant developed the term yap-scale, to measure how strong the vestigia is (referring to how much Toby yaps in its presence).[11]

References Edit

  1. Moon Over Soho
  2. Rivers of London
  3. Moon Over Soho
  4. Rivers of London
  5. Foxglove Summer
  6. Rivers of London
  7. Whispers Under Ground
  8. Rivers of London
  9. Rivers of London
  10. Broken Homes
  11. Broken Homes