Negative Energy Flood

You send ribbons of negative energy at one creature you can see within range. If the target isn't Undead, it makes a Constitution saving throw, taking 3d10 + 25 Necrotic damage on a failed save or half as much damage on a successful one. A Humanoid killed by this spell rises at the start of your next turn as a Zombie that follows your verbal orders for 24 hours, after which it acts according to its nature. If the target is Undead, it gains 3d10 Temporary Hit Points.

Using a Higher-Level Spell Slot: The damage increases by 1d10 for each spell slot level above 5.