Text or URL Conditionally in Card

[Brotedo]

I have two columns, one contains an email address and the other contains a URL. If one has a value, the other is blank. I would like to display these in one visual (probably card), in the same location, and have the hyperlink active whenever a URL is displayed.

(These actually came from the same column, which was just a text column that had email addresses or URLs depending on some condition. I just split them up by using the substring "@")

Right now, I'm just using two cards stacked on top of each other, which works but doesn't seem like the best solution?

[lbendlin]

using two cards stacked on top of each other, which works 

yep, that's pretty much your only option , maybe apart from a Smart Narrative.