Volz'Urak The Shambling Horror

Lore:

Kassadin backed away. He had blinked a few meters away behind a wall and clutched his chest. He felt it coming closer. It was an all consuming beast of the likes he had never seen. Thousands of needles rained against the wall behind him. This was the reason he fought against the void. To protect Runeterra from things like this. The void called to him to give in. resisted. It was like a dark drug the way it gave him power, but he would never be a slave to it. He would never be a slave to a creature like this. He stared it in the eyes before trying one last time to silence it. But for some reason it didn't work. He felt as if its power had somehow been amplified. It had stolen his strength. He felt weak compared to this horror. Volz'Urak would rise to destroy all that lay before him, starting with Kassadin, who found himself unable to speak.

Volz'Urak The Shambling Horror

Passive: Void terror

Abilities empower auto attacks to do a small percentage of Volz'Urak's attack damage as magic damage and applying an effect.

Q: Void Walk (not similar to rift walk)

Volz'urak enters the void, becoming untargetable but still visible for a few moments, before returning to the rift and dealing no damage.

This ability serves as an escape A an engage. during the time he is in the void he can take NO action other than moving.

W: Serrated sickles

A large number of very small aimable projectiles fire in a cone in front of Volz'Urak. They apply pierce, and stun targets who find them selves impiled to walls for one second flat over the course of the entire game.

E: Slimy Scales

passive: 10/15/20/30/40% bonus armor and magic resist when activated for 6 seconds.

R: Voracious Encounter

The next auto attack against a champion incurs the cooldown of their ultimate ability and silences them for a half a second.

Thoughts? I left out the cooldowns and numbers since it seems reasonable for riot to determine the scalings etc.