Vital Strike

Prerequisite: Great Weapon Combat Style

You can make a single attack deadlier than normal by aiming for an opponent's vital points. Once per round, when you make an attack with a two-handed or versatile melee weapon with which you are proficient and target an enemy against whom you have advantage, you can deal extra damage. On a hit, roll the weapon’s damage dice for the attack twice and add the results together before adding bonuses from Strength, weapon abilities (such as flaming), precision-based damage, and other damage bonuses. These extra weapon damage dice are not multiplied on a critical hit, but are added to the total. This technique cannot be stacked with Power Attack.