This is my first champion, I hope hes not too op.

Mortarion The Madness

Once there was a jailor, his name was Thresh, he was ruthlessly cruel and showed no mercy to his prisoners. No one escaped, or that's what they all thought. Battered and broken in both mind and body a single boy had survived. Left for dead by his tormentor he crawled away fro. The scene of his brutal "murder". Years went by and his body healed, he grew strong, the leaked magic he had been exposed to gave him awesome powers but left his mind scattered beyond repair. Stumbling through the wasteland he was left in he came upon a town. A circus master captured him and used him in his freak show, giving him a mask to hide his face and showing his scarred body to the masses. Inside of Mortar ion, alongside the madness grew anger. One fateful day he had taken enough, he shifted through the bars of his cage and murdered his captors one by one. Stealing a blade he left, hisath brought him to the fields of justice.

Passive: Dash
His madness makes him leap forward madly every now and then
After every cast ability there is a one second delay before Mortarion dashes forward the same distance as a flash.

Q: Skitter
Mortarion phases in and out of existence three times each time traveling the distance of a flash, these deal no damage but after the final flash Mortarion leaps to the nearest champion with lowest health (if there are no champions with 1000 range he will leap to a minion within the same range) the leap deals 70/100/150/200/220 CD: 7/5/4/3.5/3 seconds

W: Descent
Mortarion leaps into the air then down on target area dealing 80/120/200/250/270 CD: 11/10/8/7/5

Eespise
Mortarion slashes at imaginary foes dealing 70/100/150/200/300 damage in a cone CD: 17/14/11/9/6

Base Stats:
Dmg:59+5
Armor:15+1.5
Magic resist: 20+0
Health:475+25

Joke:Knock knock (to himself)
Who's there (him again)
Death (crazed laughter)

Taunt: ring a ring a rosie... you all fall down

Dance: tap dances using his sword as a cane.

Movement:
GET OUT OF MY HEAD
Here I come! (Singing)
Where is he?

Attack:
I'm going to make you the freak!
*gibbers*
Tiiiiime to diiiiiie

Q:
Crazed laughter (this is also his laugh)

W:
Humpty dumpty took a great-TIME TO DIE

E:
KILL KILL KILL

R:
I SEEEEEEEE YOOOOOOOU
Here I come (these can be heeard across the entire map

Passive: This provides a LOT of utility, as a temporary active it might not be bad (i.e. as part of an ult), passive I think its overpowered.

Q: You already have 4 gap closers from your passive, you don't need more. Base damage is high, cd is low. Needs some sort of scaling.

Everything else, pretty much a repeat of the q comment.

Thank you for the comments, the idea was to have a champion who could get in and out fast while quickly bursting down an enemy, not much health but enough damage and mobility to be an effective assasin