Power Attack, Mythic

When you use Power Attack, you gain a +3 bonus on melee damage rolls instead of +2. When your base attack bonus reaches +4 and every 4 points thereafter, the amount of bonus damage increases by +3 instead of +2. In addition, the bonus damage from this feat is doubled on a critical hit, before it's multiplied by the weapon's critical multiplier.

You can expend one use of mythic power when you activate Power Attack to ignore the penalties on melee