The Restraints of the Round Table (円卓拘束, Entaku Kōsoku?) are thirteen restraints set upon King Arthur's weapons by the Knights of the Round Table, applying to both Arthur Pendragon and Artoria Pendragon. Excalibur Proto for Arthur and Rhongomyniad for Artoria possess the restraints. It is unknown if Artoria's Excalibur possesses them, but it does bear similar conditions to activate its most powerful state. It is unknown if every single condition is shared between all the weapons or if they vary depending on the world.