An awesome ability that I would like to see in a incoming champion!

We love when riot make champions with new skill types (like Zac'E, Lissandra'E, Kallista's R, Rek'sai's W etc.) Many people here post ideas for champions or skins but I have an idea for a future champion ability. To be simple, I thought an skillshot type ability that the player choose the length but also the width. The ability will work this way: You hold the key of the ability (for example q) ,you can still move the champion no movement speed decrease, the longer you hold the button the more the width increase and the moment you stop holding the button you have adjust the width (it won't need more than two seconds to reach the max width) .At the same time when you hold the ability key you can use the mouse to adjust the range (you move the cursor where you want it to be, it will have a max range less than nida's spear) or you can first adjust the width and then do it.And when you press the ability key again you realese a sonic wave or something else like this.

The ability will do damage in the area that you select and will also stun enemies.The wider width the lower stun duration.Also the more far length less damage.With my awesome draw skills I have create some examples .Remember you can choose anything betwen these choices .