Benefit
Choose one school of magic, or one alignment (good, evil, law, chaos), or one energy type (acid, cold, electricity, or fire) when you gain this feat. Once made, this choice cannot be changed.
Add +1 to the Difficulty Class for all saving throws against spells that are from the school of magic or that possess the descriptor for the alignment or energy type you select.
Special
You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new school of magic, alignment, or energy type.