Light is a weapon attribute that allow character to Dual-Wield (wield two weapons in both hands). When Dual-Wielding, you use your Action and Bonus Action to attack two times with a Main Hand Attack and Offhand Attack.
- You can not add your Proficiency Bonus to your Attack Rolls when making an Offhand Attack'. You also can not add your Ability Scores Modifiers to the damage of the Offhand Attack.