Anyone else noticed the change in the tooltip? I know it's NYI but it sounds scary.
Dark Simulacrum - Places a dark ward on an enemy that persists for 8 sec, triggering when the enemy next spends mana on a single-target spell, and allowing the Death Knight to unleash an exact duplicate of that spell. Against nonplayers, only absorbs some harmful spells.
20 Runic Power, 40 yd range, Instant, 1 min cooldown
To clarify - it does not have to be a reflectable spell. But it has to be a single-target spell so don't start asking about Ice Block or Divine Shield. I wish it wasn't only an enemy target so I can copy a Divine Intervention for less repair bills but you will be able to copy a combat res too so it probably won't happen.