Antilife Surge

You send a surge of necrotic energy into a target of your choice that you can see within range. The energy then spreads from that target to as many as three other targets, each of which must be within 30 feet of the first target. A target must be a creature (undead and constructs are unaffected), and can only be affected by one instance of damage. The damage continues to spread to nearby living targets until no new targets are in range.

A target must make a Wisdom saving throw. The target takes 10d8 necrotic damage on a failed save, or half as much damage on a successful one.