This papercraft is Daedra Heart, an ingredient in the game The Elder Scrolls V: Skyrim, the paper model is created by Kuraudo3. Daedra Heart can be used to make potions at an alchemy lab as part of Alchemy.
Daedra Hearts are the key ingredient used in crafting Daedric armor and Daedric weapons at the blacksmith forge, and can also be used to create potions. They are relatively rare and quite valuable. However, some alchemy shops carry them and refresh stock every couple of days or so.
With the use of the Sigil stone, Daedra hearts can be created by using the Atronach forge in the Midden under the College of Winterhold by putting one human heart and a black soul gem in the offering box, then using the pullbar to create a Daedra heart. They are a deeper red color than the usual human heart. [Source: wikia]
You can download this papercraft model here: The Elder Scrolls V: Skyrim - Daedra Heart Papercraft Free Download