New champion: The Ratcatcher

Hello ! An idea got stuck in my head, so I had to post this. I would like to see a new champion in the game, so let's start. I think he could be midlane mage.

Story: I really did not think about this, I think something with Twitch could be good.

Look: A man with a hoodie and a long coat, we will not be able to see in his face. He will have a flute, of course. The hoodie and coat will be red color

Basic attacks: Mid-range attacks - Ratcatcher playing tunes on his flute.

Abbilities:

Passive: Catcher's control - Passive: Catcher's control - Damaging an enemy unit with a spell reduces their movement speed if they are facing away from you by 10% / 12.5% / 15%, lasting 1.5 seconds. 900 unit range. If Ratcatcher has gained 100 rats (in total), he gains bonus armor and magic resist. this will increase the more rats he has (100,200)

Q:(short CD) (skillshot) Mysterious flute - Ratcatcher will play a melody on his flute, dealing 40 / 55 / 70 / 110 / 145 (+40% AP) in magic damage to a target unit and 100 units around them with a range of 500 units. The area around the enemy unit increases by 3 units for each rat he has.

W: Revenge of the piper - Ratcatcher turns his coat and hoodie into green, instead of hunting rats, he is now hunting champions, killing a champion in this form will grant Ratcatcher health and mana.

E:(long CD) Move rats, move - Ratcatcher starts playing on his flute, increasing his movement speed and giving a little movement speed bonus to nearby allies.

R: Ratcatcher's last play - Ratcatcher will play a captivating melody on his flute, charming all nearby enemies within 350 units lasting 1.5. / 1.75 / 2.0 seconds, dealing 200 / 275 / 350 in magic damage. For every rat he has, he will deal an additioanal 1.5 magic damage. He loses 15% movement speed while playing.

I hope you like my idea, I will be happy for any kind of comment, thank you. :)

Please excuse mistakes.