Barbarian sub-class

Prime ability: Constitution; the Barbarian subclass gives a one-time hit point boost of 10 HP at Barbarian 1. These +10 HP are in addition to the HP gained for attaining Barbarian 1 (i.e., 4 + Con bonus).

Party Boon at Barbarian 1: Once daily when the Dungeon Master declares that an ally has been hit in combat by melee or damage, if you are within ten feet of that ally, you can throw yourself between the ally and the incoming damage, taking all of the damage yourself. You can even do this if the ally and source of damage are adjacent to one another.

Personal Boon at Barbarian 3: Once daily when a Barbarian fails a saving throw that results in HP damage to his person, he may enter a Rage and shrug off 25% of the sustained damage, rounded up (minimum of 1 HP of damage suffered).

All Barbarians have the ability to enter a Rage.