Two Weapon Mastery

Your dual wielding combat prowess has been honed to mastery, granting you the following benefits:

• If a feature such as extra attack allows you to make multiple attacks using the attack action, this benefit also applies to the offhand weapon.
• You can choose to make an offhand attack as part of the attack action. If you do this, you can't make any offhand attacks using your bonus action this turn.
• You can make an offhand attack as part of an opportunity attack.