HiroyukiShota wrote...
Sprite wrote...
All of the noble phantasms are constructs of prana, not physical objects. Therefore it's not implausible for two of the same weapon to exist.
Nonsense. How can it be a construct of prana when it needs prana itself to be activated.
Magic. *serious* (Not sure why, but its Nasu)
[Taken from the generally unreliable wiki; but it may answer your questions]
Noble Phantasms (å®å…·, hougu?, lit. precious tool) are "crystallized mysteries", armaments made using the imagination of humans as their core, and weapons or abilities owned by Heroic Spirits. They are the embodiment of the ultimate mysteries of a hero that symbolizes his existence through historical facts and anecdotes. They can be general weapons, such as swords, lances, and bows, or support items, such as rings and crowns. They can also be abstract concepts, like abilities and curses. Noble Phantasms are considered to be a Servant's trump card and are activated by channeling prana into them and releasing their true names. This can only be done by their true owners.