Riven main must watch

Still thinking riven is useless in s7? can do anything because dont know new things changing? today im going to tell you a trick with riven. It is about mastire, they have made some changes in masteries. I find out there is a op masterie for riven that is extreamly broken. you know that riven got alot of stuns in her tools right? This masterire is call COURGE OF THE COLOSSUSE which you get a shield everytime you stun someone. so you can use it on riven everytime you stun someone you can get a shield and in teamfight you stun 2-3 people you can get a big shield and wait for your cooldown to come up and use the shield again! It is really useful on riven because you go cdr on her.