Increases the critical effect chance of your Holy spells by X%.
Holy Power is a talent in the Holy tree which requires 30 points in Holy to max it. It increases the critical effect chance of your Holy spells. Many paladin abilities are unpredictable or ambiguous in regard to whether they use melee or spell mechanics. Generally, Retribution abilities will use melee mechanics, while Holy and Protection abilities will use spell mechanics. This talent affects spell crit mechanics.