The remaining five decks are all monocolor "Foundations decks"
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
Iain Harding [US] (5/7/2), Gholdengo ex/Lunatone 508
D amage Prevents from all damage from X
Jokes aside, The Scarab God still roams the deserts of Amonkhet
Also, PSA only grades Base set of any Pokemon card other than English and Japanese, just FYI - just so you know that their (in my opinion silly) rule isnt specific to Korean language cards