This papercraft is Broken Mehrunes' Razor, from the game The Elder Scrolls V: Skyrim, the paper model is created by ZombieGrimm. The finished model measures about 18 inches. There is another Mehrunes’ Razor on the site. Mehrunes' Razor, also known as The Dagger of the Final Wounds, Bane of the Righteous and Kingslayer, is a Daedric artifact crafted by Mehrunes Dagon that has the chance to instantly kill any opponent.
Even without the disintegrate armor effect from its Oblivion counterpart, it is a very powerful dagger. The damage dealt is equal to an unenchanted Daedric dagger while weighing half as much.
It is received after the quest Pieces of the Past if the demands of Mehrunes Dagon are met and Silus Vesuius is killed. The dagger can be tempered using an ebony ingot; however, the dagger does not benefit from any Smithing perks. [Source: wikia]
You can download the papercraft model here: The Elder Scrolls V: Skyrim - Broken Mehrunes' Razor Free Papercraft Download