Spell Penetrating Strike (Combat)

Your arcane strikes increase your ability to penetrate your target's spell resistance if your attack damages it.

Prerequisite(s): Arcane Strike, Spell Penetration, base attack bonus +5

Benefit: Whenever you successfully damage an opponent using an arcane strike , you gain a +2 bonus to your level check to beat that target's spell resistance using the next spell you cast on them. If the spell does not allow spell resistance, this ability has no effect. Multiple successful arcane strikes do not increase this bonus, and the bonus goes away at the end of your next turn if you have not yet cast a spell on the target.