Spiteful Weapon

3rd-level necromancy (rune)

Casting time: 1 action

Range: 25 feet

Target:

Components: V, S, M (a melee weapon that has injured the target)

Duration: Concentration, up to 5 rounds

Classes:

Subclasses:

You create a connection between the target of the spell (“target”), a creature that attacked and injured the target in the last 24 hours (“attacker”), and a melee weapon that was used successfully in the attack (“weapon”), all of which must be within the spell's range of you when the spell is cast. For the duration of the spell, whenever the attacker takes damage while holding the weapon, the target takes the same amount and type of damage; a successful Charisma saving throw by the target halves the damage it takes, with each attack calling for a new saving throw. The attacker can even turn the weapon against himself or herself and cause identical damage to the target. Self-inflicted wounds hit automatically, but damage is still rolled randomly. Once the connection is established, it lasts for the duration of the spell regardless of range, so long as all three elements remain on the same plane. The spell ends immediately if the attacker receives any healing.

At Higher Levels. The target has disadvantage on its Charisma saving throws if spiteful weapon is cast with a 5th-level slot.