Dream helm for summoner's merc?

If I put Dream helm on my merc, will Holy Shock aura apply on my skeletons adding lightning damage to their dmg or just on my merc?|||Just your merc. Even if it could, the damage is pretty negligible.|||Thanks for reply. You're right, it's not significant amount of dmg, but when 14 skeletons+merc+golem will be using it, it would make a difference. But it's not possible, so nevermind. :-(