Actually, this would make for a rather hilarious featured game mode...
Either 1) Riot designs "dream kits" from pre-existing champion spells, or 2) when you roll your champion, his or her abilities are randomly selected from other champions' abilities to give you a completely new kit.
Since he scales obscenely well with CDR, why not RoA and then tank items that have CDR (Spirit Visage and Frozen Heart for example). I've also thought about Banner of Command; Even IF his soldiers dont benefit from the 20% stat bonus, he's still a pusher and the promote + stronger minions + CDR + AP is all stuff he should love.