This is my Sultai Energy deck I played some FNMs with. It was fairly decent, then Attune with Aether was banned which was a big enabler for the deck, so I moved it to casual. It's still a fun list though and can hold up in 1v1s and multiplayer.
The goal is to ramp up energy and use it to your advantage. Rogue Refiner and Glint-Sleeve Siphoner give you card advantage, and Aether Hub and Attune with Aether fix your mana. Once you get your energy flowing, use it with things like Longtusk Cub and Bristling Hydra to survive the midgame so you can begin to draw out your big threats. Aethertide Whale is a threat on it's own, with built in protection and Energy generation. Multiform wonder can net you life meanwhile being a strong defender and aggressor. The unsung hero of the deck is Demon of Dark Schemes, who can board wipe small dudes, generate Energy, resurrect creatures from graveyards, and at the end of the day just beat face as a Fat flier. Aetherworks Marvel let's you do wild things that just make the game more exciting!
The deck is really good at surviving in the long run and beating your opponents to death with heavy fliers or just an army of dudes.
The issues with the deck are that it sometimes struggles to get your mana fixed, and doesn't have a lot of ways to interact with your opponents outside of going into combat.
There are a lot of cards I've considered adding to the decklist but haven't made any changes as of yet. Currently all of the cards are from Kaladesh block. I've considered splashing Red so I could add Whirler Virtuoso -- a really good card in this deck -- but I wasn't sure if my already weak mana base could handle it.
Any comments, criticisms or suggestions would be greatly appreciated. I encourage you all to try out this deck, it's very fun and fairly cheap to build.
