Whirling Striker (5e Feat)
From D&D Wiki
Prerequisites: Strength 13 or higher
Training against multiple enemies has taught you ways to strike several targets at once.
- Increase your Strength by 1, to a maximum of 20.
- You can use your action to make a melee weapon attack against all hostile creatures within your weapon's reach. If you do so, you make a single attack roll and compare the result to each target's AC, and you make a single damage roll for all creatures you hit with the attack.