R: 0; T: self; D: [sum] minutes
Name a Skill. Save vs Discipline, with [dice] Boons. If you fail, take 1d6+[dice] psychic damage. If you succeed, gain the chosen Skill at Rank 3 for the duration, regardless of your available mental slots.
You cannot learn skills that wouldn’t be contained in a well-stocked library, or skills that are so rare only a few people could teach them.