Consumes one Soul Fragment.
Deals Unholy damage to the target, and decreases their resistance to Spiritual attacks.
Dread Venom - Soul Toxin: Venom Strike - Stuns target and consumes Dread Venom.
Grim Corruption - Soul Toxin: Essence Detonation - Consumes Grim Corruption, causes the target to explode, taking massive unholy damage after several seconds.
Both - Applies both effects.