A matched pair of almost identical, exceptionally light, and perfectly balanced, yet unassuming blades.  Forged from ancient steel, these sacred weapons appear almost mundane.  The only visible difference between them being the handles - Yin's is wrapped in black cloth, and Yang's in white.

When either blade is wielded by itself,  or they are both wielded together but not attuned to the wielder, they are simple +1 magic weapons.

When both Yin and Yang are held at the same time and attuned to the wielder, the following applies:

• The blades become +2 magic weapons
• The wielder gains +1 to their AC.
• Should either weapon score a critical hit, the next attack from its twin, on the same turn, is made with advantage.
• If the wielder's action grants multiple attacks, either weapon may be used for the subsequent attacks.
• When the wielder is subject to a melee attack, and the attack roll misses their AC by no more than 2, that attack is considered to have been blocked by 1 of the blades; and the wielder can use their reaction to make 1 opportunity attack against the aggressor with the other blade.

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Bonus: Armor Class, Advantage: Melee Attacks, Bonus: Melee Attacks, Weapon Property: Light, character proficient with longswords. Although these are two separate weapons that can be wielded individually, they must be attuned to as a pair and only take up one attunementv slot., Damage, Combat, Warding, Versatile, Sap