MTG card similarity engine: Card Codex

I use this site sometimes to find cards that are similar to one another. It's automated so the comparisons don't always fulfill the same role but it's usefully different from lists that are curated by hand like https://www.mythicspoiler.com/. mtgassist.com has a similar feature but I prefer the results from Card Codex.

Compare the results from these two links

https://cardcodex.com/?card=Urborg%2C+Tomb+of+Yawgmoth#search

https://www.mtgassist.com/cards/From-the-Vault-Realms/Urborg-Tomb-of-Yawgmoth/