You can add your own Alters on the card page for whatever basic you need, e.g. Forest: https://tappedout.net/mtg-card/forest/alters/
Once you add your alter, you can display it in your decklist with the following code:
Where the 4-digit number is your unique alter code. Keep in mind that most images are scaled to display without borders, so when you add the borders to a land it might make it look a little odd in the card preview.
November 20, 2020 9:51 a.m.
“gold bordered basics”
Why would you want such a thing? That sounds ugly as hell, lmao.