Corpse Bomb

A corpse with in your view is filled with nauseous and combustible gas swelling the corpse. Whichever direction you point the animated corpse in, it walks towards it. The corpse bomb can be set to go off after an X amount of feet, or until its forward momentum has impeded.

The explosion is 10 feet in diameter and causes 3d6 necrotic damage. If the target is within 5 feet the target becomes prone, at 10 feet the target is pushed back 5 feet. If a wall is behind said target, they take an addition 1d4 for shock absorption. 

The target must make a dexterity saving throw with disadvantage. If successful the target takes half damage, if within 5 feet the target is kneeling, at 10 feet there is no push. If the saving throw is failed, full damage to each target within range. 

If cast at higher levels add 1d6 per level