You need hard removal to beat Elesh Norn, you also need some gas in hand to replay after and you need to not die to the +2/+2 swing from the other side of the table should that be on the cards
I think more than anything, its the ability to negate any varieties of Heroic Intervention that get thrown out in response
After rebalancing several of the cards in the deck, we've been very happy with the results
Both of these options are what we use on a daily basis, and they're known for durability and a smoother shuffle
I think for players looking to experiment, or looking for decks that deliver truly random results, having a deck larger then sixty isn't an issue
Further developments include the Wizards Play Network played at the international level and the worldwide community Players Tour, as well as a substantial resale market for Magic cards