S03 - Item - Naxxramas - Shaman - Elemental 6P Bonus
You gain 3% increased damage and critical damage done to Undead for 30 sec for each time your Overload triggers from an offensive spell cast, stacking up to 6 times.
You gain 3% increased damage and critical damage done to Undead for 30 sec for each time your Overload triggers from an offensive spell cast, stacking up to 6 times.