Mythen Keep (Ars Magica 5)
A Regio is a location. This is not to be confused with an aura; which is an emination of a specfic type of power source. Regio’s are ranked from low power (1) up to maximum power (10); beyond ‘10’ lay the realm of power itself. A Regio is a supernatural realm dedicated to one of the 4 powers in this game: Divine, Fairy, Magic, or Infernal. Each realm is vast and unique enough to have had individual texts written. Also, the realms do not interact with one-another equally. Below is a general concept of how well / poorly powers interact within other realms:
|Power||Divine Realm||Fairy Realm||Magic Realm||Infernal Realm|
|Fairy||HUGE minus||bonus||slight bonus||minus|
|MAGIC||HUGE minus||slight bonus||bonus||minus|
Regios are places where supernatural beings live.
Regios are places where warping caused by that unique power is common.
Magic Regios are GREAT places for magi to do their work.