Arcane Archivist

Your experience with lore-filled tomes has granted you the ability to cast arcane spells as if they were on your spell list. Once per day, you can cast a spell from the sorcerer/wizard spell list as if it were on your list of spells known. The spell consumes a spell slot one level higher than the level of the spell. You must have a spellbook containing the spell to cast it in this way, and the spell is erased when you complete the casting. You must be at least 11th level to select this revelation.