First, who's to say whether cards are good or bad in Commander
This category includes heavy whitening around all edges, heavy surface scuffing or scratches, and large creases
Isshin decks typically combine token generators like Adeline, Resplendent Cathar with burn effects like Hellrider and Purphoros, God of the Forge to blitz the table to 0 before they can react
If you do, that Background functions as a second commander for your deck
Most of the art you see in cards was based on that guide
Along with all of that, they also read, Whenever a nontoken creature you control dies, if it had counters on it, create X tapped 2/1 white and black Inkling creature tokens with flying, where X is the number of counters it had on it. This is constant fodder for your mentor ability, so you should always have a steady stream of flying threats