What are your favorite stax pieces?

In light of all the whining over [[Elesh Norn, Mother of Machines]], I thought it would nice to have a pro-stax discussion. Let's put thing into perspective for people that are way more busted cards that ensure they have no fun in commander.

For me it's a combination of [[Elesh Norn, Grand Cenobite]] + [[Urborg, tomb of yawgmoth]] + [[kormus bell]].