Master of Blades Redux.

Authors note: This is a Redux/Rebalance of Master of Blades by Xanotoz. It is a very good feat but I felt it needed a bit of balance to prevent early OP characters.

Relentless training has driven you to become one with your blades, allowing you to perform uncanny feats others would find impossible. While wielding a bladed weapon that deals slashing damage, you gain the following benefits: 

• You keep your blade(s) in constant motion, setting up offensive strikes and nimbly turning aside incoming attacks. Your perpetually fluid stance increases your AC by 1.
• If a creature you can see attacks a target other than you, and that target is within 5 feet of you, you can use your reaction to impose disadvantage on that attack roll.
• When targeted by a range weapon attack, you can use your reaction to deflect the missile with your weapon's blade. Doing so reduces the missile's damage by 1d10 + your Proficiency Modifier + your Dexterity modifier. If the damage is reduced to 0 or less, you slice the projectile out of the air, destroying it.