Shadowguard

The caster is surrounded by shadows. When a spell, melee or ranged attack hits the caster, the attacker will be struck for 13 Shadow damage. Attackers can only be damaged once every few seconds. This damage causes no threat. 3 charges. Lasts 10 min.

Aura: Causes 20 Shadow damage to attacker on hit. This damage causes no threat. 3 charges.