You basically need multiple lander sources, a Command Bridge, and hopefully a shockland
Emrakul, the Aeons Torn Emrakul, the Aeons Torn is one of the most powerful creatures ever: the best Eldrazi and among the best annihilator cards
Combat Celebrant Combat Celebrant is a way to gain a lot of extra combat steps, especially late-game when you have the excess mana to be able to use Jolly Balloon Man's effect multiple times a turn
Drana, the Last Bloodchief Drana's template was missing "an additional," so we added it
DEFINITIONS In these Conditions: (a) "auctioneer" means the firm of Ewbank Auctioneers or its authorised auctioneer, as appropriate
And while it can sometimes whiff, you usually get at least 7 mana back and basically draw a few cards after