Durable

Durable
Feat
Prerequisite: Level 4

You gain the following benefits.
Defy Death.
You have Advantage on Death Saving Throws.
Speedy Recovery.
As a Bonus Action, you can expend one of your Hit Point Dice, roll the die, and regain a number of Hit Points equal to the roll.

Source: Player's Handbook (2024) (XPHB), page 203