User blog comment:QuantumFeint/PBE ADC itemization/@comment-5593561-20140608121432/@comment-24271119-20140608130017

It is useful late game, think of jinx's rockets, permantently on because the mana she gets is more than enough.

Ezreal, his Q's give him mana if they land, and with his free AS he can get a ton of free mana, miss-fortune's q will give her a ton of mana aswell.

This item is going to be amazing late game.