Had a discussion, and an idea that might be fun.
THRILL OF BATTLE [REACTION] FEAT 12
Barbarian Concentrate Rage
Prerequisite(s) Renewed Vigor
Violence fuels you more than anything else.
When make an attack and hit, once per turn as a reaction, you can use your renewed vigor ability. If you critically hit, double the number of temporary hit points you gain.
Thoughts?
Throat Punch Games 