Corki Rework Idea

[Q] - Corki launches a powder bomb to the location, inflicting 60/90/120/150/180 (+ 75% AP) magic damage on all enemies in a 150D area and marking them for 4s. Marked units are revealed and take 6/14/22/30/38 (+ 10% AP) bonus physical damage from Corki's basic attacks. <Mana> 70/80/90/100/110 <CD> 10

[W] - Corki flies high over a fixed 675D path, raining bombs down that inflict 70/115/160/205/250 (+ 75/90/105/120/135% Bonus AD)(+70% AP) magic damage on all enemies in the path. Basic attacks on enemy champions reduce this cooldown by 0.5s each. <Mana> 120 <CD> 20/19/18/17/16

[E] - Corki activates his gatling cannon for the next 4s, inflicting 15/30/45/60/75 (+12.5% AD) physical damage on enemies every second. Enemy champions and large units have their Armor reduced by 2/4/6/8/10 per hit. Basic attacks are not disabled at this time. <Mana> 65/70/75/80/85 <CD> 14

[R] - Corki fires one missile up to 950D, inflicting 50/80/110 (+25% AD)(+30% AP) magic damage to all enemies in a 130D area on impact. Corki recieves a counter for 4s after casting that stacks up to 4 times. Upon reaching 4 stacks, the stacks are consumed and the missile launched has 50% increased damage, explosion radius, and a 1s Stun to the impact target. One missile is generated every 14/13/12s with a cap of 7, and Corki spawns with 3 missiles. <Mana> 35/40/45 <CD> 2

[Ability] - Corki's basic attacks on enemies deal 1.25/1.4/1.55/1.7% of the target's Max HP in bonus True Damage.