Death Ward

4th-level abjuration   Casting time: 1 action   Range: Touch   Target: A creature within touch range   Components: V S   Duration: 8 hours   Classes: Cleric, Paladin   Subclasses: Artificer (Alchemist) , Cleric (Ambition Domain), Cleric (Death Domain), Cleric (Grave Domain), Cleric (Life Domain ), Warlock (The Undead), Warlock (The Undying), Theurgy Wizard, Cleric (Time Domain), Circle of Community, Circle of Spirit, Paladin (Oath of Ancestors)  
  You touch a creature and grant it a measure of protection from death.
  The first time the target would drop to 0 hit points as a result of taking damage, the target instead drops to 1 hit point, and the spell ends.
  If the spell is still in effect when the target is subjected to an effect that would kill it instantaneously without dealing damage, that effect is instead negated against the target, and the spell ends.