Domain: Strength
Effect:
You can wield heavy/martial weapons without an attack penalty.
Invocation of Strength: This battle, you and your nearby allies deal triple damage instead of double damage on critical hits with melee attacks.
Adventurer Feat:
Once per battle, you can deal extra damage to one target you hit with a melee attack as a free action. The damage bonus is a number of d4 equal to your Strength modifier or to your level, whichever is higher.
Champion Feat:
You can use d8s instead of d4s for the bonus damage dice.
Epic Feat:
Once per day, you can use d20s instead of d8s for the bonus damage dice.