I think its the overall style, combined with the lighting and shadow on the central figure, and general details on the characters faces and clothes that stand out most
This time its all about five guilds: Azorius (white-blue), Rakdos (black-red), Gruul (red-green), Simic (green-blue), and Orzhov (white-black)
Unfortunately, too many will have Oath of Nissa anyway, to say nothing of just playing a third red source
For two generic mana and one white mana, Boromir, Warden of the Tower does a lot on its own, and is an auto-inclusion if you play a stax deck with white in it
You might want to Brainstorm in response to put your key combo piece on top so that they cannot discard it
Low-rarity splashy cards tend to be things that are simple and super functional