Hey, guys !
That´s my first guide and it will help you to pown.
I´m german but i will di my best to write english.
But don´t think ez ais a bad char cause he was neved !

Sheen: great for ez, it´s make mana and the passive is great for the skill bashing
wriggles latern: you have distance liefesteal and can farm creeps !!!
manamune: mana, mana regenaration and attack damage, **** up it´s very nice
madreds bloodrazor: dmg, attack speed and the passive are perfect to pown
the black cleaver: reduce the armor and the damg great, awesome with exhaust and his cripple
trinity force: it makes all, and has the same effect as sheen, it´s really awesome
berserker greaves: you have a better attck speed and can pown you distance lifesteal and your armor penetration with the black cleaver

Standard sequence:
arcane shift-> exhaust-> essence flux-> mystic shot bashen
Allone fights:
do mystic shot and go out the others range, if they have low life attack they with her standard skill sequence
Team fights:
standard sequence is all you need :D
jungle fights:
you can attck through the wall and do your arcane shift to teleport you throug the walls

Important !!!
If a rival have low life and is going away use your trueshot barrage

Use your passive and do al lot of mystic shots to farm some creeps :D