Ability Surge (DnD Feat)

Your ancestral blood makes you tougher against poison and electricity.

Prerequisite: Chosen ability score 13

Benefit: When this feat is taken choose a single ability. Once per day as a full-round action you may gain a +4 enhancement bonus to your chosen ability score. This bonus lasts for a number of rounds equal to your character level.

Special: You may take this feat multiple times, but each time you must choose a new ability score to which you can apply the feat.