Tenacity of Tal-Kora

Omen's Prestige 1 Feature

Your battle fury carries the overwhelming presence of a Tenacious Sentinel, granting you the following benefits:

• When you use your Reckless Attack on your turn while raging, you can choose to do it with tenacity and gain temporary hit points equal to your Constitution modifier. These temporary hit points last until the start of your next turn. You can do this a number of times equal to your proficiency bonus, regaining all expended uses when you finish a long rest.
• Your Daunting Roar trait gains an additional 2 uses, and you regain them when you finish a long rest. Additionally, you can activate it (no action required) whenever you score a critical hit with a melee weapon attack.
• Reducing as creature to 0 hit points causes runes to appear on your War Admiral's Cloak and Sword. Each kill imbues more runes, lasting 7 days.