Cone of Decay

A blast of necrotic energy erupts from your hands. Each creature in a 60-foot cone must make a Constitution saving throw. A creature takes 8d8 necrotic damage on a failed save, or half as much damage on a successful one.

A creature killed by this spell begins to rapidly decay and break apart. They make death saving throws with disadvantage.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.