At the start of the battle round, you can select one of the following Vows of Atonement to be active for your army until the start of the next battle round. You can only select each Vow of Atonement once per battle.
The Path of the PENITENT
Add 3" to the Move characteristic of PENITENT models from your army.
Absolution in Battle
Each time a unit from your army is selected to fight, if that unit made a Charge move this turn, until the end of the phase, add 1 to the Attacks and Strength characteristics of melee weapons equipped by PENITENT models in that unit.
Death Before Disgrace
Each time a PENITENT model from your army is destroyed by a melee attack, if that model has not fought this phase, roll one D6. On a 2+, do not remove it from play; the destroyed model can fight after the attacking unit has finished making its attacks, and is then removed from play.