Chill Touch

Make a ranged spell attack against the creature to
assail it with the chill of the grave. On a hit,
the target takes 1d8 {b} and it can't regain hit
points until the start of your next turn.
If you hit an undead target, it also has
disadvantage on attack rolls against you
until the end of your next turn.
This spell's damage increase by 1d8 at 5th, 11th,
and 17th level.