All fighting styles
If your class or archetype has fighting styles, you can learn them.
Once on your turn, when you use an action to make a weapon attack with an unarmed strike, you can make one additional unarmed strike.
When you are wielding a melee weapon in one hand and no other weapons or shields you gain a +1 bonus to attack and damage rolls with that weapon and a +1 bonus to Defense.
When you roll damage for an attack you make with a melee weapon that you are wielding in two hands, you can roll one extra die of the weapon’s base damage dice and discard the lowest of the weapon’s base damage dice. The weapon must have the two-handed or versatile property for you to gain this benefit.
If you aren’t incapacitated, you can add your shield’s Defense bonus to any Reflex saving throw you make against a spell or other harmful effect. Additionally, when you are subjected to an effect that allows you to make a Reflex saving throw to take only half damage, you can use your reaction to take no damage if you succeed on the saving throw, interposing your shield between yourself and the source of the effect.