Dwarven Fortitude

Dwarven Fortitude
Feat
Prerequisite: Race: dwarf

You have the blood of dwarf heroes flowing through your veins. You gain the following benefits:
- Whenever you take the Dodge action in combat, you can spend one Hit Die to heal yourself. Roll the die, add your Constitution modifier, and regain a number of hit points equal to the total (minimum of 1).

Source: Xanathar's Guide to Everything (XGE), page 74