Fortified Hero

(Prerequisite: Level 4+)

You gain the following benefits.

Underdog’s Resolve. When you are attacked by a creature that has a CR higher than your level, you gain a +2 bonus to your Armor Class for that attack.

Heroic Intervention. When an enemy you can see takes a Legendary Action, you can take a Reaction to intercede, preventing the Legendary Action from happening. You can take this Reaction a number of times equal to your Proficiency Bonus and regain all expended uses when you finish a Long Rest.