User blog comment:Leyrann/How can I make my Elo rise faster?/@comment-76.102.213.96-20130103223059

Annivia hands down. Provided that you have a blue buff, Annivia has the ability to influence all aspects of the game. Pushing lanes is not a problem for her, which opens oppurtunities for roaming. No CC on your team? No problem, use her multi-target Q stun. Need inititation? Wall to split up their team and throw out a Q and witness the chaos that ensues. Fed enemy adc? Stun them and follow up with your attack/movement speed debuff ult.

The cool thing is, you don't need to build straight damage for Annivia. If you find that your ADC is carrying hard, you can just build tanky and peel for the adc. Her versatility is unmatched.

TL;DR : Annivia can carry by fullfilling multiple roles for your team.