I saw B^6^ suggested over on Mastodon

(Bleach Blonde Bad Built Butch Body)

I prefer "Perjury Traitor Greed"

Typically, this is what the cards are themed as, at least the older sets. White and Black are "enemy" colors in Magic: the Gathering after all, same as Red and Blue, Black and Green, etc (based on their position in the MTG color pentagon).

That said, there were some definitely racist cards that got banned and pulled from databases in 2020, Invoke Prejudice being a notable example.

It shows a hooded executioner with a black axe. “If opponent casts a Summon spell that does not match the color of one of the creatures under your control, that spell is countered,” says the card. It effectively kills off creatures that don’t look like the creatures already on the table.

https://www.polygon.com/2020/6/10/21287154/racist-magic-the-gathering-cards-banned-removed-from-database-wizards-apology

i assume they were kidding but if not thats a massive yikes

I've got some bad news for you about the history of those cliches.

I'd vote for that!