They assess cards on centering, corners, edges, surface, and "eye appeal"
Through the Wormhole features space-themed Artifacts printed on galaxy foil cards, while Mycosynthwave is unmistakably retro with its 80's synthesizer aesthetic, prominently featuring the Plane of Mirrodin's perpetual sunset of five suns on the Artifact cards
The Rize Of Sozin/Fire Lord Sozin This enchantment saga enters the battlefield and immediately destroys all creatures , a great way to demoralize an opponent if they've spent a few turns building up an army, but be careful not to accidentally screw yourself with this activation
The second nod in favor of playing 15 or less lands is the aforementioned BO1 algorithm which I touched on briefly in the 16-land decks bit
Should you get to flip Aang, you should win the game, ideally