Your spells of that element are especially potent, breaking through element resistance more readily than normal.
Choose an element (earth, fire, ice, lightning, water, or wind). Spells of the element you select are harder to resist. Any elemental resistance on a creature is considered 2 less when determining damage from a spell of the element you select, but is considered 2 more with spells from its opposing element.
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take this feat, it applies to a new element type. This feat stacks with the Spell Penetration feat.