First of all, first comment is made by your friend. Second, the damage output would be relatively good with this build, but the things I miss is survivability and more mana. In the heat of the battle you spam alot of your spells and your mana will go down fast. EFlux is expensive and Arcane Shift will be needed if you have to get out of there fast.

I enjoy playing Ezreal and it took a while before I found my build, which is a hybrid build with lots of hp/mana/dmg/ap/survivability. Think about what I have said and start looking for the items that match these descriptions ;)

I'm liking what I see here, I'll have to try this out next time I play Ez.

What about a Doren's shield instead of the dagger? Life regen seems to work better than lifesteal IMHO...