This papercraft is the Daedric Dagger, based on the game The Elder Scrolls III: Morrowind, the paper model is created by Brokensoul. Daedric Dagger is a weapon that appears in The Elder Scrolls III: Morrowind.
Divayth Fyr, Therana, Gothren, Darvasa Vedas and Ronerelie Philulanie wield this weapon. About the paper model:
Reinforcing by cardboard or similar is recommended.
You can download the paper craft here: The Elder Scrolls III: Morrowind - Daedric Dagger Free Paper Craft Download