You can customise the frame of the card, alter your character's pose and position and put in effects of to add to the image These effects unlock over time or when you have achieved certain tasks League Cards can be created at the Rotomi PC in every Pokmon Center and they can be updated every time you alter the character's look.
Its usually overshadowed by the popularity of Feather, the Redeemed as Boros commander since they play similar roles
This is illustrated in the Diamond/Water Paradox (or what we might call the Mox/Island Paradox.) Why are diamonds so expensive and water so cheap
Lets break it down, franchise by franchise
Ive found my calling, at least in Strixhaven Limited, and its to draft Quandrix decks as often as I can
That might sound like a lot of protection, but think of it like this: If your deck is completely shut off when the commander or a similarly critical piece isnt in play, your opponents can beat you with a Swords to Plowshares or two