Iron Mettle (3.5e Maneuver)

Your faith is unswerving, and so you shall be as well!

As an immediate action you gain 1/4th of your initiator level as a sacred (if good or neutral) or profane (if evil) bonus on all saving throws against one attack, maximum +5 at 20th.

You also gain mettle, allowing you to take no effect on a successful Fortitude or Will save that normally has a save for partial. If you already have the mettle ability, this becomes improved mettle allowing you to take the partial effect on a failed save, and no effect on a successful save.