The DCI, as google tells me, is the governing body behind things like banned cards, restricted cards and the way that the competitive gameplay is governed, and the artwork (done by Maro?) is just a scribbled dude in a blindfold holding a mug of beer tossing darts at cards on a dartboard as a self-deprecating way to show off the "rigorous decision-making process" that the DCI uses to ban a card
The deck revolves around taking advantage of mechanics allowing you to play cards from exile, triggering Prosper's Pact Boon effect to flood the board with treasure tokens
The main thing that creatures are used for is attacking your opponent and using them to block your opponents own creatures
Azorius Guildgate Baldur's Gate Basilisk Gate Black Dragon Gate Boros Guildgate Citadel Gate Cliffgate Dimir Guildgate Gateway Plaza Golgari Guildgate Gond Gate Gruul Guildgate Heap Gate Izzet Guildgate Manor Gate Orzhov Guildgate Rakdos Guildgate Sea Gate Selesnya Guildgate Simic Guildgate Talon Gates of Madara The Black Gate Thran Portal
Black still owns this part of the color pie with the best ways to search up any card out of your library with cards like Insatiable Avarice, and Wishclaw Talisman