Enfeebling Arrow

Arcane Archer feature
Attack Action | Target | Instantaneous
The creature hit by the arrow takes an extra 2d6
necrotic damage. The target must also succeed
on a Constitution saving throw, or the damage
dealt by its weapon attacks is halved until the
start of your next turn.
The necrotic damage increases to 4d6 when
you reach 18th level in this class.