This papercraft is Slithice the Naga Siren, a melee Agility hero who can be played both as a late-game carry and an early/mid-game support, based on the DotA 2 multiplayer online battle video game, the paper model was created by Ardian Tjeng, shared by Kang Papercraft.
Slithice is an item dependent hero yet with the right style and inventory choices she can overpower many other heroes that deal strong physical damage while casting her all four active abilities to handle her enemies altogether and turn the tides. Mirror Image creates three illusions to wreak havoc upon her enemies. Ensnare is a very useful spell with several unique features. It not only holds an enemy in a place, but also prevents them from blinking and going invisible. Even if the enemy is spell immune, Ensnare can still target the enemy unit.
Rip Tide calls the forces of the seas, allowing the Siren and her illusions to unleash a wave of magical water to wash away foes and degrade their armor. The Song of the Siren is the ultimate ability for team battles; Naga Siren performs a mystical song to put her enemies to sleep in an area around her. Song of the Siren is her tool for initiation, as while her enemies are under her slumber her allies can come forth and prepare to unleash their attacks after the song wears off. Time is Naga's best friend, for as the game wears on, Slithice will gradually consume more and more of the map and engulf enemy towers and heroes like the rising tide itself. [Source: GamePedia]
You can download this papercraft template here: DotA 2 - Slithice the Naga Siren Free Papercraft Download