Ultimate Adventurer's Handbook
Altruistic Sacrifice
1-level Necromancy
Casting Time: 1 action
Range/Area: Touch
Components: V, S, M
Materials: a ritual dagger, which you plunge into your own heart
Duration: Instantaneous
You touch a creature that has died within the last minute and transfer your own life force into it. You immediately die, and that creature returns to life with a number of hit points equal to the hit points you had when you cast this spell. This spell can’t return a creature to life that has died of old age, nor can it restore any missing body parts.
At higher levels: If you cast this spell using a spell slot of 5th through 8th level, you can choose to drop to 0 hit points and begin making death saving throws instead of immediately dying. If you cast this spell using a 9th level spell slot, the spell’s range changes to 30 feet, and you can target any number of creatures you can see within range.