Enervating Strike

Empower a melee weapon with Necrotic energy. The weapon will remain empowered for 24 hours or until the wielder of the weapon decides to expend the energy on a successful melee attack. Only one weapon can be empowered by this spell at a time.

When expended, the necrotic energy flows into the wound created by the attack, infecting the target and withering them from within. The target must make a CON saving through against your Spell Save DC. If the target succeeds, the spell deals 2d8 damage and ends. on a failed save, the target takes 4d8 instantly and 2d8 Necrotic damage at the start of the victims next turn and every turn thereafter for 4 rounds. At the start of each turn, the victim can repeat their save attempt to end the effect. Damage dealt by this ability heals the user for half of the damage dealt.

At Higher Levels: Every spell slot expended beyond 5th level increases the initial Necrotic damage by 1d8, and every second spell slot expended beyond 5th increases the damage over time component by 1d8 Necrotic damage.