As a Brawler, you gain the following class features

While you aren’t wearing medium or heavy armor, Your unarmed strikes and Brawler Weapons can deal bludgeoning damage equal to 1d6 + your Strength modifier. If you strike with two free hands or use two hands to strike with an improvised weapon, the d6 becomes a d8. This die changes as you gain Brawler levels, as shown in the Brawling column of the Brawler table.

At 1st level, your practice of brawling gives you mastery of combat styles that use unarmed strikes and Brawler weapons, which are simple weapons, scimitars, and improvised weapons.

At 1st level, when wielding an improvised weapon that can reasonably be used as a shield, such as a chair, body, wok, etc., Your AC is increased by 2 when you do not attack with the weapon, instead using it as a shield.

Martial Flexibility

At 1st level, your mastery of versatility and combat allows you to adapt to any situation on the fly. You may use a bonus action to activate martial flexibility. Each flexibility is active for 1 minute after activation unless otherwise stated. Only one flexibility may be active at once. This number increases according to the Flex Max column in the table below. You have a number of uses for this ability equal to 1/2 your Brawler level rounded down + your Intelligence modifier (Minimum 1). These uses recover after a long rest. Additionally, you may recover a number of uses equal to your intelligence modifier after a short rest once per long rest.

As your level increases, the amount of flexibilities you may have active grows, as does the speed of your activation. Each ability consumes one use. Your degree of flexibility is shown in the Degree column in the table below. This indicates the highest degree flexibility you can use. Flexibilities cost an amount of uses equal to their degree. For example, a 6th level Brawler can activate two 1st degree flexibilities or one 2nd degree flexibility. You may activate a new flexibility before an active flexibility expires. If this newly activated flexibility brings you over the maximum simultaneous flexibilities, the previous flexibility or flexibilities immediately end. Activating this ability using a reaction must take place on your turn.