Fencer

You are skilled in the art of fencing and can use a sword with one hand behind your back, granting you the following benefits:

• Whenever you are wielding a martial melee weapon that deals slashing/piercing damage in one hand that you are proficient with and no other objects, your attack rolls gain a +1 bonus.
• Whenever you are wielding a martial melee weapon that deals slashing/piercing damage in one hand that you are proficient with and no other objects, you have the opportunity to parry attacks. Whenever a creature within 5 feet of you makes a melee weapon attack roll against you, you can use your reaction to add a -5 bonus to the attacker's roll, possibly allowing the attack to be parried. You can also try to parry melee weapon attacks directed at allies if an attacker within 5 feet of you makes a melee weapon attack roll against an ally who is also within 5 feet of you. If your Dexterity score is higher than your opponent's Dexterity score, the -5 bonus becomes -7. You can use this feature a number of times equal to your proficiency bonus before finishing a short or long rest to use it again.
• Whenever you successfully parry an attack using the feature above, you can use a bonus action to do one of the following immediately after the parry:

1. Make an attack roll against the creature you parried using the same weapon you parried with, but with a +5 bonus to the roll.
2. Twist your opponent's arm around, making your opponent's weapon fly out of their hand 10 feet away from them in any direction.
3. Cause your opponent to fumble and move 5 feet in any direction, possibly provoking an opportunity attack from another creature but not from you.