Requirements: 14 Strength, 14 Dexterity
“…And of the three overhead cutting angles, each may be preformed in two ways; each a guard, while also hewing forth with great strength.”
When you make a two handed slashing attack with a Sword class weapon, you can choose to enter an offensive guard stance, and end your turn. While in this stance you have +2 bonus to AC against melee attacks. If a creature misses a melee attack targeted at you while you are in this stance, you can make a melee attack against them as a reaction.
If you take an action or unequip your weapon while in this stance, you leave the stance.