User blog comment:WOB Silas/Karma + Poppy Dual Jungle Team/@comment-4199297-20110922085611

About tank: why not skip it? The impression I got from IIRC GamesCom streams was that most teams used: ranged AD + support bot, AP mid, fighter/bruiser top, some jungler of any type and if that's not Amumu, they don't really have a tank... So in your setup, a real tank might not be needed either.