Poison the Dying

2-level Transmutation

Casting Time: 1 reaction, which you take when you see a creature within 100 feet of you casting a Healing spell or Ability, which utilizes magic.

Range/Area: 100 ft.

Components: Verbal, Somatic, Material

Materials: a vial of tainted blood.

Duration: Instantaneous

You twist the benevolent energies of healing into a force of decay. When you see a creature cast a healing spell or use a healing ability which utilizes magic within 100 feet, you can use your reaction to alter that energy. The healing energy intended for its target(s) is converted into necrotic energy, causing the affected creature(s) to take necrotic damage equal to the amount that would have been healed. If the healing is above 10, you make make an ability check using your spellcasting ability. The DC equals 10 + the healing above 10. On a fail your spell can not overwrite the healing energy.

At higher levels: When you cast this spell using a spell slot of 3rd level or higher, the healing that can be overwritten without struggling increases by 10 for each spell level.

Available for: Sorcerer, Any necromantic spellcaster.