Your comment is true, this build is not meant to be a tank build, you certainly must have a tank in your team to pull this off! It's the purpose to not become the focus, otherwise RoA is definitly a good idea. I like that item, but I believe it's too expensive for the purpose it's gonna have. You can buy a Giants Belt or just an extra Ruby Crystal if you think you're too squishy :)

Thanks!

your thoughts are nice,i'll give you a +1,but you are still too squishy. once you use ice blast and ultimate,you have nothhing else,you are sitting duck,waiting to be killed,thats why instead of going for banshees,i prefer getting rod of ages, then mejais,and then banshees. low ap until late game,but you are not that squishy,and have more chance to get stacks which will carry your AP high until endgame :)