All of this only applies to the Kithain. Nunnehi and Inanimae are likely to have different costs and such, but I haven’t bothered to look them up (yet).
|Attribute||Current rating x 4|
|Raising Ability||Current rating x 2|
|Raising Art||Current rating x 4|
|Raising Realm||Current rating x 3|
|Willpower||Current rating x 2|
|Glamour||Current rating x 2|
Page 276 of Changeling 2nd edition states that any changeling with the Mentor background may learn Arts and Realms from that Mentor with the possibility of a reduced XP cost. The Background Trait is rolled at diff 6. Every success reduces the cost of purchasing a new (or raising an existing) Realm/Art by one point. See Raven if you’re interested in acquiring a Mentor for learning Arts or Realms. This will have to be RPed out and will not be simply offscreened due to how useful it is.