Look, I'm a simple man. I like inexpensive food, I like watching sports on television and I enjoy a good beer when I get a chance. You know, normal things.
Oh, and I also like casting Genesis Wave for (basically) a million.
Enter Genesis Wave Devotion.
The shell of Arbor Elf/Utopia Sprawl, Nykthos, Shrine to Nyx has popped up in plenty of Modern decks (my favorite is probably Doubling Season Planeswalkers), so it's no surprise to anyone at this point how much mana a deck like this can produce. With an Arbor Elf on the first turn and a Utopia Sprawl on the second, you can make four mana on turn two to cast Garruk Wildspeaker to then untap two lands and play a three-drop as well. This, of course, leads to some incredible broken board states on turn three or four, and from there it's basically choose-your-own-adventure in terms of what to do with the mana.
The earliest iterations of this shell led to Tooth and Nail to fetch Emrakul, the Aeons Torn and Xenagos, God of Revels for a hasty 30/30. Fun, but entwining Tooth and Nail is a rather all-or-nothing strategy. Other versions splashing other colors for Elesh Norn, Grand Cenobite as well as Gifts Ungiven and Unburial Rites were fun as well, but how about a win condition that offers a bit more flexibility and less targeted weaknesses like relying on the graveyard?
That's where Genesis Wave comes in.
This has to be one of the most fun cards Wizards has ever printed. I've seen some epic Genesis Wave in Commander to end games on the spot, and I've also seen the card do fun things in competitive Elf decks that sometimes have to fire it off for as little as four or five mana. This deck gets the best of both worlds, as it can be a reasonable midgame play, but can also be absolutely backbreaking once your mana begins to ramp up.
The best part is that it builds on itself. You can fire off a big Genesis Wave, find another Garruk or Nykthos along with Eternal Witness, and immediately create another huge amount of mana to replay the Genesis Wave you just returned with the Witness. Rinse, repeat and win the game.
Eternal Witness, of course, is an all-star in all situations. It can be used a loop with Primal Command, bouncing an opponent's land and searching out a Witness to return it to replay the next turn. This denies an opponent a fresh draw step, while allowing you to advance both your board presence and mana available, which is a great middle ground on your way to a backbreaking Genesis Wave.
This deck probably isn't consistent enough to catapult you to the Top 8 of your next Grand Prix, but it's a blast to play and definitely a contender for your next Friday Night Magic. And hey, who doesn't enjoy creating 15 mana on turn four to cast a Genesis Wave?
Thanks for reading,