Chill Touch

VS
Casting Time: 1 action - Range: 120 ft
Duration: 1 round
Ranged Attack Spell. 1d8 necrotic damage.
Target can't gain HP until end of your next turn.
Undead: Disadvantage until end of your next turn.
5th level (2d8), 11th level (3d8), 17th level (4d8).