For example, the art of Vassal's Duty depicts a samurai's act of obeisance to his lord, a scene which expresses the mechanic of the card (preventing harm to legendary creatures):
The bowing vassal in the card is a legend himself -- you'll recognize him as the samurai Nagao, as seen on the card Nagao, Bound by Honor:
But hey, note that symbol behind daimyo Konda. See it? It's Konda's personal symbol. You'll recognize it from the card Konda's Banner:
If you go a few more steps like this, I think you can get to Kevin Bacon somehow.