The caster is surrounded by shadows. When a spell, melee or ranged attack hits the caster, the attacker will be struck for X Shadow damage. Attackers can only be damaged once every few seconds. This damage causes no threat. 3 charges. Lasts 10 min.
Shadowguard is a Shadow-based buff. When getting attacked, it does direct damage to the attacker. It can only proc every few seconds and has 3 charges. It is only available to TrollPriests.
This spell should always be active. Due to it being instant it cannot be interrupted. Furthermore it does good damage, especially with a decent amount of spell damage.
Especially for Shadow Priests, this spell is extremely powerful. In addition to its good damage, it has three chances to proc Blackout, Shadow Weaving, "passive" Vampiric Embrace healing, and spell hit procs, such as the one from [Mark of Defiance].