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I also really like Garruks Uprising

Then when you swing with Tanazir you can have the base power and toughness of everything that you control become your Elder Dragon's power and toughness, so without any additions to the guy you'll get 4/4 base and power to your team

I also had lots of boardwipe and interaction that Orzhov is good with, as well as a bunch of token generating Elspeths, and it could grind out games real well

The thing is that you actually spend 3400 gems to do this, which means that if your successful in tournaments using your in game earned gold, you could very easily pay for a premium accounts from your winnings