You are especially adept at using a certain skill that can benefit from your key ability score.
Prerequisite: Key ability score 13+
Benefit: Choose one skill. With it, you can use your key ability score modifier instead of the ability modifier normally applicable for the skill. You gain no benefit in choosing a skill that is already modified by your key ability score.
Special: You can gain this feat multiple times. Each time you take this feat, it applies to a new skill.