As an action, you can make a weapon attack with a melee weapon that deals bludgeoning damage to smash through armor and bone. Add the stamina die to the attack’s damage (add half if you miss by 4 or less). Treat the target’s soak as being 2 less than normal.
You can increase the damage for each additional stamina die expended.
Elder Mountain Hammer. You can expend 2 additional stamina dice to ignore damage resistances.