Frail Ferocity

Scrawny and small, friends and foes alike have underestimated you your entire life, even in combat they can underestimate your ferocity and blood magic. And you have learned to use it as a strength. As a bonus action, you can grant yourself advantage on the first Attack, Intimidation check, or Persuasion check you make against a target you can see. Once you have used this ability against a target, it cannot be used on that target again as they no longer underestimate you.