I will be honest in saying AP Ezreal is not for everyone. His insane damage potential is only good if you hit EVERYTHING and yes.. I mean everything. However, if you enjoy high risk - high reward champions with plenty of skillshots, look no further.

AP Ezreal boasts the highest DPS burst on 5 champions in 2 seconds, this test was done by a player called "Makerofhay" and was done with a test of 400AP.
#1 Ezreal 9220 damage
#2 Rumble 9150 damage
#3 Brand 9095 damage
#4 Galio 8500 damage
#5 Karthus 8450 damage
#6 Maokai 8350 damage
#7 Annie 8225 damage
#8 Gragas 7992 damage
#9 Fiddlesticks 7755 damage
#10 Viktor 7620 damage

Pros:

- Highest AOE burst from any Mid

- Extremely effective poke

- Hard to Gank

- Low cooldowns on every ability

- High AP scaling on every ability (after Lich Bane)

- One of League's best kiting/positioning champions

- Unstoppable late game, especially with Trueshot Barrage

- Unconventional mid, people don't know how to counter him.


Cons:

- Extremely squishy

- Poor farming

- No Crowd Control

- Hard to Master

- Everything is a skillshot, miss and it's ineffective

- Rough Early game

- Risky Playstyle

That's it guys.
The end of my AP Ezreal build and Guide
Please rate it. Hope you will like it!!!
If u have any questions feel free to comment and tell me if this build helped you