Combat Prowess

Prerequisites: 5th level or higher, 13 strength or higher, proficiency with a two-handed or versatile weapon(s)

You've honed your martial skills to were you can use your weapon in more minute ways. Before the end of your turn, if you're using a weapon with the two-handed or versatile property, you can use your reaction to assume a defensive stance that grants you a bonus to your AC equal to half your proficiency bonus (rounded down) until the start of your next turn. Additionally, if you use your action to make an attack with a weapon with the two-handed or versatile property, you can make an attack with a blunt end of the weapon (whether it be the hilt or pommel) as a bonus action for 1d4 damage.