Martial artists should be able to use martial arts weapons to use extra abilities, such as:

• Throwing shuriken is a bonus action that costs no time (at least in some circumstances).
• While wielding a quarterstaff, you can jump.
• While wielding nunchaku, you can disarm opponents.

Artifact shuriken The Silver Star: deals +d8 damage to all targets. Like Mjollnir, it returns to the player’s inventory after being thrown, but doesn’t have any chance of hitting the player. Since there is only one of it, it cannot be multishot.

This would be a good first sacrifice gift for Monks.

Shuriken may degrade in enchantment when they hit monsters, but they no longer break.