Serenity (Ex)
Beginning at 1st level, a barbarian can call
upon inner reserves of awareness and tranquility, granting him
additional combat prowess. Starting at 1st level, a barbarian can enter a
state of serenity for a number of rounds per day equal to 4 + his Constitution modifier. At each level after 1st, he can enter serenity for 2 additional rounds. Temporary increases to Constitution, such as those gained from spells like bear’s endurance, do not increase the total number of rounds that a barbarian can enter serenity per day. A barbarian can enter serenity as a free action. The total number of rounds of serenity per day is renewed after resting
for 8 hours, although these hours do not need to be consecutive.
While in a state of serenity, a barbarian gains a +4 morale bonus to his Dexterity and Wisdom, as well as a +2 morale bonus on all saves. While in a state of serenity, a barbarian cannot cast spells, use Intelligence-based skills, or communicate.
A barbarian can end his serenity as a free action and is fatigued after serenity for a number of rounds equal to 2 times the number of
rounds spent in serenity. A barbarian cannot enter a new state of
serenity while fatigued or exhausted but can otherwise enter serenity multiple times during a single encounter or combat. If a barbarian falls unconscious, his serenity immediately ends, placing him in peril of death.
A barbarian who chooses a path of serenity over rage still gains a rage
power at 2nd level and every two levels thereafter. They function in
exactly the same way, but the barbarian calls them serene powers.
This ability replaces the rage class ability.
Greater Serenity (Ex)
At 11th level, when a barbarian enters serenity, the morale bonus to his Dexterity and Wisdom increases to +6 and the morale bonus on his saves increases to +3.
This ability replaces greater rage.
Purest Serenity (Ex)
At 20th level, when a barbarian enters serenity, the morale bonus to his Dexterity and Wisdom increases to +8 and the morale bonus on his saves increases to +4.
This ability replaces mighty rage.