Determined, Variant (5e Feat)
From D&D Wiki
Prerequisites: Constitution 13 or higher
With the power of sheer determination and willpower, you cling onto your life even in the brink of death. You gain the following benefits:
- You have advantage on death saving throws.
- When you take a damage that reduces your hit point to 0, if you are not killed outright from the damage, you drop to 1 hit point instead. Once you use this feature, you must finish a long rest to use it again.