User blog comment:BerryBandit/Mechanically demanding champions/Quick decision champions/@comment-5514182-20130623134713

I can only think of Janna who hasnt already been mentioned. She has the most devastating CC of any support, but its also hard to land. You have to manage whether or not to use zephyr for the slow, or to keep the passive. You have to clutch shield allies. And her ultimate has to be leveraged between an AOE heal or an AOE peel, not to mention knocking an enemy into a wall, or better, into your team.