I am trying to determine what conditions will create Advantage on a Death Saving Throw for a player character who drops to 0 hit points during combat.
Thanks to the "Lucky" racial feature, a Halfling can negate a natural roll of a 1 on a d20(two failed saves). This is similar to but different from having Advantage on a Death Saving Throw.
Spells, skills and features that add bonuses to saving throws don't apply: the death saving throw feature of 1 or 20 comes from the raw die roll of 1 or 20. There are two reasons to need advantage on this saving throw:
To avoid character death (when you've missed one already and don't want a double miss to kill the character)
To have a higher chance to "quick revive" to 1 HP without further expenditure of resources from the party.
When you make a death saving throw and roll a 1 on the d20, it counts as two failures. If you roll a 20 on the d20, you regain 1 hit point. (PHB, pg. 197)
The significant difference between 0 HP and 1 HP is the difference between being unconscious, and being able to take actions, reactions, cast spells, flee, hide, etcetera. While another character can cast a healing spell as soon as you drop to 0 HP ("quick revive" to greater than 0 HP), in certain combat situations they may be too busy with the fight to do that.
The responses to the use of Portent were mixed. As I understand that approach, portent could not be used by the wizard on himself, but perhaps on another character. If the latter, it's even less desirable than a use of in-combat healing.
I have found two spells, two items, and one feat that will provide advantage on a generic saving throw, and thus on a death saving throw (death saves are not tied to any of the six abilities, as so many other saves are):
- 9th level spell Foresight (while under its influence, duration 8 hours)
- 8th level spell Holy Aura (if within 30' of the cleric maintaining that aura)
- Candle of Invocation (very rare wondrous item, if it is burning and you are within 30' of it)
- Luck Blade(Legendary). (Once per day advantage on any save/attack or ability check) property can’t be used again until the next dawn.
The Lucky feat: the character can choose to apply advantage on a saving throw roll.
The spell levels and the rarity of the magic items I have found suggests that this benefit, advantage on death saving throws, won't be available until at least 12th level (items) or beyond (spells and items).
Are there other ways (beyond the Lucky feat) to gain Advantage on a Death Saving Throw that work at lower level than those mid-to-late game choices that I found and listed above?