I have good news!
I have made an official ruling that no longer limits you to using a mentor OR libraries to learn spheres. Now, you can use both.
Combining Mentors and Libraries
Evan's player would roll 3 dice (for Annie as a mentor) + 2 dice (for the two additional sources of information). Evan's player would roll a total of 5 dice on this roll. Since Annie's paradigm isn't completely compatible with Evan's, the roll is diff 8 instead of diff 7.
I have made an official ruling that no longer limits you to using a mentor OR libraries to learn spheres. Now, you can use both.
Combining Mentors and Libraries
- In order to use both a mentor and libraries to augment the XP cost of learning a sphere, you select the highest rated value in the equation to act as the base to roll from.
- Each additional resource (either a mentor or library) acts as a +1 to the total number of dice rolled
- Attempting to learn from a mentor or library whose paradigm is incompatible with your own will raise the difficulty of the roll. Learning from a source of a different Tradition raises the difficulty of the roll to 8. If the source material is particularly incompatible, the difficulty is raised to 9 or even 10.
- If this roll is botched, the student loses a point of WP.
Evan's player would roll 3 dice (for Annie as a mentor) + 2 dice (for the two additional sources of information). Evan's player would roll a total of 5 dice on this roll. Since Annie's paradigm isn't completely compatible with Evan's, the roll is diff 8 instead of diff 7.