WOW MASTER YI IS FUCKIN BROKEN ASS
JESUS JUST PRESS FUCKIN Q AND RIGHT CLICK, SIP YOUR CUP OF FUCKIN TEA AND WATCH AS YOU "EARN" A PENTAKILL.

JESUS JUST PRESS FUCKIN Q AND RIGHT CLICK, SIP YOUR CUP OF FUCKIN TEA AND WATCH AS YOU "EARN" A PENTAKILL.

Look at katarina. Q E W R oh look you killed 2 people better press R. Bam penta kill
That kids, is what you call an opinion.
Yep, Yi is sooooo OP. It's almost as if to counter him you would need someone who is completely outrageous. 
Seriously though, support Taric can reliably 1v1 a Master Yi. Taric isn't even particularly strong at the moment.
then your team should be able to just wreck him before he gets unstunned.