Vampiric Sacrifice

You sacrifice your life essence to return a dead creature, you touch, back to life whom was killed by unnatural means (i.e. violence or poison), provided that it has been dead no longer than 1 hour. Willingly, or not, the creature's soul rejoins the body and the creature returns to life with 1 hit point.

This spell also neutralizes any mundane poisons and cures nonmagical diseases affecting the creature at the time it died. It does not, however, remove magical diseases, curses, or similar effects; if these aren't first removed prior to casting the spell, they take effect when the creature returns to life. Additionally, the spell can not return an undead creature to life. 

This spell closes all mortal wounds, but it doesn't restore missing body parts. If the creature is lacking body parts or organs integral for its survival--its head, for instance--the spell automatically fails.

The caster rolls the hit dice for all their character levels subtracting their CON bonus for each die (i.e. a multi-class 8th level fighter, 2nd level wizard with a 14 CON rolls 8d10+2d6-20) and loses that many hit points (minimum 0). If the caster reaches 0 HP or lower there are no Death Saves. They are dead. If the caster lives they additionally suffer four levels of exhaustion, incurring the penalties of each level and cannot heal by any means until they have fully recovered from the exhaustion. Similarly the target suffers from having their spirit forcibly restored to life. The target suffers a total of five levels of exhaustion and cannot be healed while they remain exhausted.