Property: You can change any damage you deal to necrotic damage.
Power (daily): trigger, you hit with an attack that deals necrotic damage, the target becomes vulnerable 5 to necrotic damage, save ends.
Paragon Tier: vulnerable 10
Epic Tier: vulnerable 15
The Void attracts the Void.
The Legend of Oberon and his sword Ragnarok in the gnome village teaches us that the Void corrupts whatever it touches.
Spread the disease to become an agent of the Void.