Kor Spiritdancer might be a good addition. Also Umbra Mystic might help lend some survivability to your creatures.
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Is there any reason why Meddling Mage 's ability wouldn't prevent your opponents from playing their Commander's?
I think Bant Charm and Proteus Staff are winners to get rid of opponent Commanders. Of course, taking control of your opponents Commander is always fun too! =P
I'm definitely thinking about making an EDH deck with Rubinia Soulsinger as the Commander.