Theorycrafting the Perfect Teams

I thought it would be interesting to put this out there:

An all-Mpen team; Amumu Jungle Fiddlesticks Support Kog'Maw Carry Kayle Mid Ryze Top

If Mumu and Ryze build tanky it could work. Dealing true damage to pretty much everyone during team fights would be an interesting match.

The opposite would be fun - reducing armor:

All-Arpen Team: Urgot, Hercules or Nasus top Vi or Jarvan IV Jungle Taric Support Corki or Kog'Maw Carry Kayle Mid

Another idea is an all-knockback team for ping pong lolz,; Lee Sin or Maokai Jungle Gnar or Poppy Top Vayne or Tristana Carry Alistar or Janna Support Gragas or Syndra Mid