You master the longsword, bastard sword, shortsword, and greatsword. You gain the following benefits when using them.
•You gain a +1 bonus to attack rolls you make with these weapons.
•Whenever you use the weapon's Deflect property, you increase your AC by 2 instead of 1.
•On your turn, you can use an object interaction to change your weapon stance, provided you have the weapon in hand. Doing so gives the weapon you are wielding either the Crushing or Puncture property, also causing the weapon to lose the Deflect and Cutting properties.
•When you make an opportunity attack with the weapons, you have advantage on the attack roll.