[{quoted}](name=Mr Immaturity,realm=NA,application-id=3ErqAdtq,discussion-id=uJc62lsE,comment-id=0002,timestamp=2015-05-08T04:36:19.293+0000)
Adding stacks to his main passive would be a little too strong becuase he'd get his passive up far too quickly that way,and get a lot of early game waveclear that other common adc's cant contend with. Ganks would do nothing to him because of his double flash capability, so he would be next to untouchable with that much waveclear.
I disagree. We would have to see some testing to know for sure, it's definitely worth exploring. If it's OP then it remover it before applying the buff to the game.
As for other ADCs not being able to contend with it; I think you underestimate what they are capable of. Lucian has his double shot and 2 csing abilities (one of which is AOE, the other also hits 2 things). Tristana has a much more powerful attack speed steroid and AOE. Jinx has attack speed steroids and AOE (probably the best CSer for ADCs). Ashe has AOE. Varus has a similar attack speed passive, and AOE. Kalista can just stack her E on all the minions and nuke them.
Ezreal is the only ADC that is limited to 1 reliable but single target cs ability (his E is his escape, his ult is well. His ult, it also loses all it's damage when fired into a crowed; and won't get you much CS) , and has the only attack attack speed steroid that is mediocre late game and practically a non-factor in the early game.
However, the passive idea itself isn't bad. Maybe if it did 0 dmg and only % of AP, it would definitely provide useful for wave clearing as an AP/Mid ezreal.
Yes it should be % of AP only. No base damage.