This papercraft is Riven's Runic Blade, based on the game League of Legends, the paper model was created by EuTytoAlba. Riven's abilities charge her blade for 5 seconds, causing her to do 20 / 25 / 30 / 35 / 40 / 45 / 50 % of her total attack damage as bonus physical damage on her next basic attack. The amount increases at level 3, and every 3 levels from there on. Riven can store up to 3 charges, and can only expend one at a time.
You can download the papercraft template here: League of Legends - Riven's Runic Blade Free Papercraft Download