• Type of feat: General (Spellcasting)
• Prerequisite: 4 levels in a spellcasting class
• Required for: None
• Specifics: You gain one extra spell slot in your daily allotment, at any level up to one lower than the highest level of spell you can currently cast. For example, a 4th level sorcerer (maximum spell level 2nd) gains either an extra 0 level or 1st level slot, and is able to cast any spell he knows of the chosen level one more time each day. Likewise, a 4th level wizard can prepare any extra 0 level or 1st level spell he knows. Once selected, the extra spell slot never changes level. You can gain this feat multiple times. Each time, you gain an extra spell slot at any level up to one lower than the highest level of spell you can currently cast.
• Use: Automatic

Gameplay note: When determining the highest level of spells a character can cast, the game only takes into consideration levels in a base caster class, e.g. levels as cleric or wizard. Levels from a prestige class such as Red Wizard or Arcane Scholar of Candlekeep are ignored. This means that a level 5/10/10 Wiz/RW/ASoC, for example, can only take Extra Slot feats for spell levels 0 (cantrips), 1, and 2, respectively, although that character can cast 9th level spells.