# Spell Mastery ## Feat 20 ### [[wizard]] **Category** class; You have mastered a handful of spells to such a degree that you can cast them even if you haven't prepared them in advance. Select any four spells of 9th rank or lower that are in your spellbook; each spell you select must be of a different rank. These spells are automatically prepared when you make your daily preparations, and you gain an extra spell slot for each spell. You can select a different combination of spells by spending 1 week of downtime studying your spellbook and retraining your mastered spells. *Source: Pathfinder Player Core* *ORC*