As for Bust, once you hit six mana to cast - something not hard to reach in Commander at all - you can get rid of all the lands, regardless of their type
Several planeswalkers including The Wanderering Emperor and Sorin, Imperious Bloodlord have dominated various Constructed formats
Finally, both colors can destroy your opponents lands too
One of these many formats is Pioneer
Invasion of Amonkhet Krydle of Baldur's Gate Phenax, God of Deception Oona, Queen of the Fae Mind Grind Soaring Thought-Thief Glimpse the Unthinkable Duskmantle Guildmage Umbris, Fear Manifest Ashiok, Dream Render Traumatize Lands Dimir wants a lot of lands that produce black and blue mana , and there are lots of those to choose from
Lorcana and Ravensburger were in attendance, and all of the products for Rise of the Floodborn and Disney Lorcana: Disney100 were there