Unliving Weapon
3rd-level Necromancy
Components: V, S, M (pinch of sulfur)
Casting Time: 1 action
Range: 30 feet
Target: One undead creature
Duration: 1 hour (concentration)
Book of Vile Darkness

This spell causes an undead creature to explode in a burst of powerful energy when struck for at least 1 point of damage, or at a set time no longer than the duration of the spell, whichever comes first. The explosion is a 15-foot-radius burst that deals 8d6 necrotic damage.
While this spell can be an effective form of attack against an undead creature, necromancers often use unliving weapon to create undead capable of suicide attacks (if such a term can be applied to something that is already dead). Skeletons or zombies with this spell cast upon them can be very dangerous to foes that would normally disregard them.
At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, you can target 1 additional undead creature for each 2 slot levels above 3rd.