Good idea, yes/no?

Shield Charge
5% of Base Mana 8 - 25 yd range
Instant 30 sec cooldown
Requires Shields
Charge an enemy with your shield, debuffing your enemy causing your next holy attack to do [SBV*0,75] more damage to your enemy. This ability cause high threat.*

* Discussable, maybe the high threat component should go away. But still, it´s not usable when you fight the boss, since it´s a minimum of 8 yd range on the ability. It´s great if the melee have to run away, you can´t build aggro when you run away (I don´t count Avengers here or if you have a SoV stack up). useable on fights like Winterchill, since the ranged continue to nuke even when he isn´t tanked.