Vim
One of the fifteen Hermetic Arts, Vim (abbr. Vi) is a Form that deals with magical power as such, as well as creatures of the four Realms of Power.
Notable traditions and magi
Bonisagus the Founder was considered a master of this form.
Conciatta of Bonisagus expanded the art to affect all four supernatural realms. Information about her and her work in Vim can be found in Legends of Hermes.
References
- ArM5, p. 79 (description), 156 (Spell guidelines)