Barbarian Rage

Effect: 

Once per day, use a quick action to start raging. A rage lasts until the end of battle, or about 5 minutes.

While raging, you roll 2d20 to hit with your barbarian melee and thrown weapon attacks instead of 1d20. Use the higher roll for the attack. If you roll a natural 11+ with both dice and your highest attack roll is a hit, the attack is a critical hit!

Recharge 16+: After a battle in which you rage, roll a d20 and add your Constitution modifier. On a 16+, you can use Barbarian Rage again later in the day.

Adventurer Feat: 

Whenever the escalation die is 4+, as a quick action, you can start raging for free. (It doesn’t count against your normal usage.) This rage lasts until the end of the battle, as normal.

Champion Feat: 

You can now start raging freely when the escalation die is 3+.

Epic Feat: 

You can now start raging freely when the escalation die is 2+.