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):
Vassal's Duty
Vassal's Duty art by Dave Dorman
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:
Nagao, Bound by Honor
Nagao, Bound by Honor art by Dave Dorman
The lord in the art of Vassal's Duty is on a card, too. It's the White head honcho himself, Konda, Lord of Eiganjo:
Konda, Lord of Eiganjo
Konda, Lord of Eiganjo art by John Bolton
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:
Konda's Banner
Konda's Banner art by Donato Giancola
If you go a few more steps like this, I think you can get to Kevin Bacon somehow.