Pure Adrenaline

You live for the duel, mano a mano!  Armor impedes movement, and you need to be entirely free to engage in all manner of motion, be it rapid, subtle or otherwise.  You have learned to harness the "rush" of battle to your advantage; you become a fleeting target, a feint master.  The following effects apply:

• You gain an AC bonus equal to your proficiency bonus, so long as you don't wear armor or equip a shield.
• You may use the two-weapon fighting technique, equipping a suitable weapon in each hand.
• Increase your Dexterity score by 1 to a maximum of 20.
• Increase your AC rating by 1 when engaging a single melee opponent.