Faydent - Champion Concept

A Champion concept of my own design. Lore and Title still to be determined. His name is...

Faydent (Not title, just Visualization) Steam Punk Assault Riflemen

Passive - Faydent's Assault Rifle stores steam up to 100% which effect his abilities. At 100% steam, Faydent's Critical chance is is increased by 15%

15% Steam every second

Q - Hot Steam - Faydent releases steam from his Assault Rifle increasing his attack damage and attack speed. -30% Steam-

Attack speed by 10% - 15% - 20% - 25% - 30% Attack damage by 20% - 15% - 25% - 35% - 45% CD 20 secs (point 1) - 16 secs (point 3) - 12 secs (point 5)
Duration - 4 secs

W - Steam Grenade - Faydent's Assault Rifle charges 3 Steam Grenades, Each grenade shot does low AP damage and slows the target. -10% Steam Each- (Works like Teemo's Shrooms, Charges up after cooldown)

Slows by 20% - 25% - 30% - 35% - 40%
CD 1 sec between grenades (all points) CD for each grenade to charge - 30 secs (point 1) - 23 secs (point 3) - 15 secs (point 5) Duration of slow 1.5 secs (point 1) - 1.75 (point 2) - 2 secs (point 3) Base Damage of each grenade 40 - 50 - 60 - 70 - 80

E - Propel - Faydent propels (Steampunk Jet pack or Propeller boots of some kind) to and Rifle butts a nearby enemy (Creep or Champion) with the force of steam, rooting the champion, and dealing heavy attack damage. -40% Steam-

Stun Duration - 0.5 sec - 0.75 sec - 1 sec - 1.25 sec - 1.5 sec
CD 11 sec (all points) Base Damage 100 - 125 - 150 - 175 - 200 (Low Ad Ratio)

R - Steam Barrage - Faydent changes his clip in his rifle, granting his auto attacks steam, enemies attacked by Faydent's auto attack have reduced sight range. - 20% Steam every auto attack - (Works like Swains R)

CD 20 sec (point 1) - 10 sec (point 2) - 5 sec (point 3)

Tell me what you think of my ADC Champion Concept, and things that should be changed to fit his role and character. Also give me ideas about a lore and title! Thank you for reading :) THIS IS A WORK IN PROGRESS!

The Photo is an image i pulled from Google images, but is what i imagine his rifle would look like, a friend suggested that his gun should be connected from the back of the gun to a flying box machine which floats above Faydent, when Faydent ults the box would turn red as if it was overheating flying around Faydent.

EDIT: Lowered Attack Damage percentage on Q. 2/22 EDIT: Took out Faydent's CD reset on his R. 2/22 EDIT: Lowered Base AP Damage on W. 2/23 EDIT: Changed Faydent's E stun to root, and decreased root duration. 2/23 EDIT: Changed Faydent's R. 2/23 EDIT: Added ability names. 2/23