New Champion Concept "Dade" (still in the works)

So after reading up on the Nocturne and Zed theory, I started to make a champion that had gone down the path if Zed had taken full control of the shadows which ultimately led to Dade. Dade, although has strayed away from the initial idea, is a ninja based character (most likely from Ionia) who uses smoke to his advantage, disappearing and re-appearing around his foes.

Passive: Hitting enemies with ability places a concentrated smoke cloud that disbands after a few seconds. While an enemy is in a smoke cloud they have reduced vision and are slowed. While Dade is in a cloud he gains bonus AD and move speed. As clouds disband the buffs/debuffs granted are weakened as well. Clouds stack up to two times, and can be cleared with wards or vision granting abilitys. Additionally Dade can reactivate his ability's to teleport to the center of a fog cloud created by that ability.

Q: Dade throws out a handful of kunai dealing physical damage.

W: Dade tosses out a smoke bomb which explodes after hitting an enemy or after three seconds creating a smoke cloud. If this ability hits an enemy two clouds will be spawned due to Dade's passive.

E: Dade becomes invisable for 0.25 seconds causing his next auto attack to gain slightly increased range and increased damage and blink him behind his target. If Dade's target is in a smoke cloud upon being hit by the auto the cool down is reduced by half.

R: Dade drags an enemy away from the battle into a large, concentrated cloud of smoke. While in the cloud neither Dade nor the enemy can be disrupted by surrounding foes. The cloud last for 3 seconds or until someone has died and applies all buffs and debuffs given by a normal cloud.

Once more this is not final Dade is just a place holder. I'm open to names, general looks, weapons and changes.