Death Wave

Curling your fingers into deadly arcane passes, you conjure a heaving wall of negative energy. This area can be up to 30 feet long, up to 10 feet wide, and up to 10 feet tall. Each creature in that area must make a Constitution saving throw. On a failed save, a creature takes 8d6 necrotic damage and is paralyzed. On a successful save, a creature takes half as much damage and isn’t paralyzed. The wave of death moves away from you at the beginning of your turn, moving 60 feet and then ending.

A paralyzed creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

At Higher Levels. When you cast this spell using a spell slot of 6th or higher, the length of the wall increases by 10 feet per slot level over 5th.