There exists an ancient order originating in the Ionian Isles dedicated to the preservation of balance. Order, chaos, light, darkness -- all things must exist in perfect harmony, for such is the way of the universe. This order is known as the Kinkou and it employs a triumvirate of shadow warriors to uphold its causes in the world. Shen is one of these shadow warriors, entrusted with the sacred duty of Watching the Stars - exercising judgment untainted by prejudice.
Born to a clan whose members have decorated the ranks of the Kinkou for generations, Shen was trained his entire life to become the Eye of Twilight, and thereupon to dispassionately determine what must be done in the interests of equilibrium. As his final trial to ascend to this position, he was made to attend the Takanu, a ceremony in which his father was tortured before his eyes to test his resolve. Any reaction whatsoever would have resulted in his immediate disqualification, but he never averted his gaze and never blinked, not once. As the Eye of Twilight, Shen must make decisions which would buckle the wills of ordinary men, removing all emotion from the equation. He now works with his fellows Akali and Kennen to enforce the balance of Valoran. This hallowed pursuit has unsurprisingly led the triumvirate to the Fields of Justice.
The Eye of Twilight sees not the despair of its victims, only the elegance of equilibrium.
Shen is the first champion in the League of Legends to use energy to cast his abilities, rather than mana or health like most other champions. This system caps the maximum amount of energy Shen can have at 200 energy, and regenerates Shens energy very rapidly (10 energy per second).
Vorpal Blade: Hits a target enemy for magic damage, and marks the target for allies to see. Allied units that attack the marked enemy target get healed over several seconds.
Feint: Shen defends against the next champion attack or spell, blocking much of the damage from it.
Shadow Dash: Shen dashes towards target location, taunting enemies he passes through.
Stand United: Places a shield on target ally which absorbs damage. After channeling for several seconds, Shen teleports to the target ally and shields himself as well.
Ki Strike (passive): Every 10 seconds, Shens next attack deals bonus damage based on his max health. Being attacked by enemy champions makes this passive occur more frequently.