Sephiroth\Cloud themed Yasuo\Riven skin.

I'm sure this has been suggested before, but why not post it again! The characters fit, even down to the back-stories, appearance, and move list.

Yasuo: Q - Steel Tempest: Same animation, but rather than wind for the knock-up, make it a shock wave-looking effect. W - Wind wall: Rather than wind, a wall of fire. E - Sweeping Blades: Same animation. R - Last Breath: His wings come out of his back during the ult and remain until the armor penetration boost wears off.

Riven: Q - Broken Wings: Rather than the flip for the knock-up on the third Q, she does similar to Braver a forward leap and brings the sword down. W - Ki Burst: Same Animation. E - Valor: A bunch of swords circle around her for the shield duration. (Much like the Omni-Slash beginning during the Advent Children movie). R - Blade of the Exile: Her sword turns into the Buster sword, and her Wind Slash takes on an animation similar to Clouds Limit Break, Blade beam, and travels along the ground with the rippling shock wave effect.