Your spells of a certain element are more difficult to resist.
Benefit: Choose one energy type (acid, cold, electricity, or fire). Add +1 to the Difficulty Class for all saving throws against spells that deal damage of the energy type you select.
Essentia: The DC increase by +1 / Essentia
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take this feat, it applies to a new energy type.