This goes all the way back to Alpha , where you find the very-banned-in-Commander Power Nine card Time WalkTime Walk
This is especially important for cards with Adventures of a different color, like Decadent Dragon
Archazia is an owl creature who has heterochromia, and given how intentional Disney's designs are, this is likely a nod towards the inks that Archazia may represent
But more importantly, two, there are differences in card backs from one print run to another
While there are plenty of chonkers to pick from, Archon gets it done
Turning that into a source of card advantage was an excellent way to create a unique, flavorful commander