High powered cube with the Power 9 and a bunch of other powerful cards. You are encouraged to do stupid, broken, degenerate stuff... such as:

• Satoru Umezawa + Blightsteel Colossus for a surprise instakill
• Channel + Fireball to someone's face for the win
• Channel to play a big colorless creature like Ulamog, the Ceaseless Hunger or Cityscape Leveler as early as turn one
• One-sided bounce with Cyclone Summoner + Grave Titan
• Perennial Behemoth + Strip Mine or Wasteland for repeated land destruction
• Bazaar of Baghdad to discard something expensive like Emrakul, the Promised End and Unburial Rites to play it out of the graveyard
• Teleportation Circle + Cloudblazer or Gruff Triplets for repeated value - add in Symmetry Matrix for even more
• Birthing Pod on cards that make creatures on ETB like Blade Splicer or Scion of Vitu-Ghazi so you keep the value while trading up
• Steal a creature with Gilded Drake and then bounce drake back to your hand with Run Away Together to do it again
• Steal a creature with Ray of Command and then blink it with Ghostly Flicker to keep it permanently or sacrifice it to Soul Exchange
• Use Hokori, Dust Drinker to lock down the board after you have an aggressive start
• Bounce or hide your creatures under Angel of Serenity and then Balance to shrink your opponents board (and hand)
• Narset, Parter of Veils and Timetwister or Reforge the Soul
• Zirda, the Dawnwaker and Basalt Monolith for infinite mana
• Have Kiki-Jiki, Mirror Breaker and Zealous Conscripts loop to create infinite haste creatures
• Cast Approach of the Second Sun, Braingeyser for seven and then do it again
• Combine Dualcaster Mage and Heat Shimmer to make a million 2/2s with haste
• Put Curiosity on Niv-Mizzet, the Firemind to ping and draw your opponent to death

...and much more!