Tales of the Valiant Players Guide (pg. 131)
You excel while helping others. You gain these benefits:
• You can use the Help action as a bonus action on each of your turns.
• When an ally you can see or hear within 30 feet of you spends one or more Luck, you can also spend Luck to increase their roll.
• When an ally within 30 feet of you is reduced to 0 hit points or fails a death save, you gain 2 Luck.