Death Ward

Casting Time: 1 action
Range: Touch
Duration: 8 hours
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 spells ends.