# Great Weapon Master *Source: Player's Handbook (2024) p. 204* **Prerequisite**: 4th; Strength 13 or higher You gain the following benefits. **Ability Score Increase.** Increase your Strength score by 1, to a maximum of 20. **Heavy Weapon Mastery.** When you hit a creature with a weapon that has the Heavy property as part of the [Attack](Mechanics/CLI/rules/actions.md#Attack) action on your turn, you can cause the weapon to deal extra damage to the target. The extra damage equals your Proficiency Bonus. **Hew.** Immediately after you score a Critical Hit with a Melee weapon or reduce a creature to 0 Hit Points with one, you can make one attack with the same weapon as a Bonus Action.