Similar to the Baron of Light and Baron of Shadow, Arcana is an entity of pure arcane energy with no true goals, whims, or reason for existing beyond the sustenance of arcane magic. Because arcane magic has no opposition like the Holy and Unholy energies, there is no wrong way to devote oneself to arcana.
Devotion: Worshipers of Arcana must do one of the following in order to increase Devotion with it; cast arcane magic, preserve arcane knowledge, train others in arcane magic.
Special: Chaplains who choose to worship Arcana instead cast Arcane magic instead of Divine. In addition to this, they can choose Holy or Unholy for their Devotion without affecting their Devotion score.