If youve played against them once, youve played against them all because the small differences in iteration between anyones list for these decks can be so minute youd feel like youre playing against a stock list
Ready-to-play 51-card deck
Buying yourself two more copies is pretty cheap and adds more consistency
But if you change this with something like Opalescence (or are using the Faceless One), then your background commander would be affected and could be targeted by anything that says commander creature. Most of the cards that refer to commander creatures instead of just commanders are background cards themselves
Why is the limit 500, and not lower
You want even, natural light on a plain, dark, non-reflective background and your own photos, and you definitely shouldnt use a stock image pulled from Google