| Name | Prerequisites | Benefit | Sources |
|---|---|---|---|
| Attune Gem | Intelligence 13+, Craft (gemcutting) skill, arcane spellcaster level 3rd+. | on page 21 | |
| Augment Summoning | Spell Focus (conjuration). | Each creature you conjure with any summon spell gains a +4 enhancement bonus to Strength and Constitution for the duration of the spell that summoned it. | on page 21, on page 89, on page 39 |
| Energy Substitution | Any other metamagic feat, Knowledge (arcana) 5 ranks. | You choose one type of energy: acid, cold, electricity, fire, or sonic. When employing a spell with the acid, cold, electricity, fire, or sonic designator, you can modify the spell to use your chosen type of energy instead. The altered spell uses a spell slot of the spell's normal level. The altered spell works normally in all respects except the type of damage dealt. | on page 79, on page 58, on page 21, on page 25, , on page 40 |
| Eschew Materials | You can cast any spell that has a material component costing 1 gp or less without needing that component. (The casting of the spell still provokes attacks of opportunity as normal.) If the spell requires a material component that costs more than 1 gp, you must have the material component at hand to cast the spell, just as normal. | on page 214, on page 189, on page 22, on page 94, on page 40 | |
| Reactive Counterspell | Improved Counterspell, Improved Initiative. | on page 22, on page 42 | |
| Spell Girding | on page 22 | ||
| Spell Thematics | Arcane spellcaster level 1st. | on page 22, on page 44 | |
| Spellfire Wielder | on page 23 | ||
| Widen Spell | You can alter a burst, emanation, line, or spread shaped spell to increase its area. Any numeric measurements of the spell's area increase by 100%. A widened spell uses up a spell slot three levels higher than the spell's actual level. Spells that do not have an area of one of these four sorts are not affected by this feat. | on page 23, on page 102, on page 42 |