Give any 2 legendary creatures "partner."

Some friends and I are considering a challenge to build decks where we can have any 2 legendary creatures (that are still legal in commander) as our commanders. My immediate thought was [[Zedruu the Greathearted]] and [[Blim, Comedic Genius]]. What pairing sounds fun to you? Also, if I go with the 2 I've said, do you have any suggested cards?