Death-Sense

You touch a willing creature and imbue it with power to sense the danger around it. For the duration or until the spell ends, the creature has advantage on all saving throws, including Death saving throws, and any attacks made against it cannot be made with advantage. Additionally, if the creature were to be reduced to 0 Hit Points, it may choose to go to 1 Hit Point instead, ending the spell. Additionally, if the creature were to die during this spell, they become unconscious and stable instead, ending the spell. 

For every level of spell slot used to cast this spell beyond 3rd, the duration increase by 1 hour.