Spending Stamina for Extra Damage

For dealing with that pesky villain whose Invulnerability is just 1 level higher than your most damaging attack, use this house rule. You may increase the your Damage by +1 for one round by spending 2 points of Stamina. You spend the Stamina before you see if you hit or not, so it might be a good idea good to couple it with Determined Effort.