The Yin-Yo is a craftable Hardmode yoyo. If enemies are near, the yoyo will randomly fire Dark Shards towards the target or Light Shards away from the target. Both shards will travel back and forth five times before fading away, passing through walls and piercing any number of enemies. When the yoyo returns to the player, it will be automatically re-thrown if they are still holding the fire button.
Its best modifier is Godly. It cannot get modifiers that affect size.
- Although this weapon has lower base damage than the Chik, it can be still considered superior due to its extra projectiles.
- The Yin-Yo is colored black and white in a Taijitu or "Yin Yang"-style design commonly associated with Daoism. The Chinese word 道 means "way" or "path", and can also mean "philosophy". The word is often romanized to either "tao" or "dao". This trait is shared with Dao of Pow.