Publication:Dread Codex 2/New Spells/Knowledge of the Ages

''The knowledge that is compiled in the minds of man is not lost when a person dies. Although many believe it is, the souls keep this knowledge hidden away in dark vaulted chambers. This spell was once created by a great necromancer, and it is said that he would call on his dead master’s spirit when he researched new spells. With this spell, the caster is able to summon ancient knowledge to himself or to a target of his choice, by touching him.''

For the duration of the spell, the target receives a +20 competence bonus to a chosen skill, e.g. a thief receives the knowledge of a long dead master thief and gains a +20 competence bonus to his Move Silently check. Although the wizard can have this spell memorised more than once, a target can only be influenced by one of these spells at a time, meaning that a person can only be possessed by one spirit at a time.