These weapons, originating from the Western Isles and adapted from rice flails, are used by certain denominations of Monk and are infamous for being Dangerous if used incorrectly.

Nunchaku
Abilities
Unorganised
Dangerous - Weapon
This weapon is very difficult to control and can lead to the wielder accidentally harming themselves. On a natural 1 you do normal weapon damage to yourself.
Emergent - Weapon
These weapons seem simple to use but if you are trained in martial weapons you learn you can do much more damage with them. If you are trained in martial weapons the weapons damage die size is increased by one.
Momentum - Weapon
Weapons that have the momentum property pack more of a punch the faster they move. When you make an attack, and land a hit, you may choose to deal no damage and build momentum for d3 turns. When building momentum your movement is halved. If you take damage or take any actions that are not an attack with the weapon you lose your momentum. If you succeed an attack you may expend your momentum. When you expend your momentum you deal weapon damage x momentum + 1d10 + modifiers.
Specialist Training - Weapon
This weapon is awkward and difficult to use without the proper training. If you do not have the proficiency in this weapon specifically, it has the Unwieldy property.