D&D 5e Spell Necromancy

Blight

A creature that you can see within range makes a Constitution saving throw, taking 8d8 Necrotic damage on a failed save or half as much damage on a successful one.

Level
Level 4
Casting Time
Action
Range
30 feet
Target
Creature
Duration
Instantaneous
Saving Throw
Constitution
Concentration
No
Components
V S

A creature that you can see within range makes a Constitution saving throw, taking 8d8 Necrotic damage on a failed save or half as much damage on a successful one. A Plant creature automatically fails the save. Alternatively, target a nonmagical plant that isn't a creature, such as a tree or shrub. It doesn't make a save; it simply withers and dies.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 4.