Most of the cards that hit today give you card advantage potentials from various angles, and then you can try to play around them the best way you can
I also haven't done this for any other deck, but if you're willing to dish out a few extra bucks I highly recommend picking up Calamity of the Titans, Desecrate Reality, and Not of This World, they're all under $5 each but they are incredible for the deck
Also note that Gandalf will double your triggers for your legendary or artifact stuff entering or leaving the battlefield, like Solemn Simulacrum, Spine of Ish Sah, Ichor Wellspring or Astor, Bearer of Blades or even classics like Godo, Bandit Warlord
However, Atraxa leaked as a blurry photo, and questions were raised regarding its authenticity
Once the board is open and Ruhan sufficiently suited up with our armory (Obsidian Battle-Axe, The Reaver Cleaver, etc.) and auras (Steel of the Godhead, Mantle of the Ancients, etc.), we can further ensure opponents are vanquished in timely fashion by copying our Commander via cards like Helm of the Host and Irenicus's Vile Duplication, which ignore the Legendary rule
Moreover, TCG Player is also hosting preorders for select Final Fantasy booster sets, albeit at over MSRP, but at current market price