Sturdy

Your body has adapted to the hardships of battle, making you difficult to kill:

• Increase your Constitution score by 1, to a maximum of 20.
• When you are at full hit points and suffer any effect that would drop you to 0 hit points or kill you, you can drop to 1 hit point instead.
• You can add your Constitution modifier to Death Saving throws.
• Rolling a 1 on a Death saving throw only counts as one failure.1