Acerack's Negative Energy Aura

You concentrate necrotic energy from the negative plane and unleash a wave of deadly negative energy. Each creature of your choice within 80 feet of you must make a DC 22 Constitution saving throw or take 10d8 necrotic damage and have their max hit points be reduced by 3d8. If a creature dies or the spell reduces their max hit points to 0, they immediately rise as a zombie under your control. On a successful save, they only take half damage and suffer no other effects.