The owner of this deck hasn't added a sideboard, they probably should...
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Use the massive power of Karn and Second season to abuse his power, then combine it with Zendikar's roil to SLAUGHTER opponents! That was what inspired me. The ability for infinite 3/3 indestructible flying elementals.
Use the overwhelming force of Doubling season to enhance Karn, pushing his ultimate multiple times, using Zendikar's Roil and Doubling season to produce Infinite amounts of Elements, and Eldrazi Monument to make them unstoppable! Everything else simple leads to more land to push this combo off.
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