I stumbled on the pattern Swallowtail Butterflies by Kimi Honda while browsing Ravelry. It's from the 80's/90's so it's out of print.
Interestingly enough, it was shared in multiple magazines (I thought that wasn't a typical thing for crochet??) and I was able to find the Magic Crochet magazine on eBay.
I made mine into a curtain instead of a table runner so I only did the first half of the pattern and then repeated the stars/dot pattern until it was long enough. I used a 1.3mm hook and Aunt Lydia's Classic Crochet Size 10.
It's currently being used over my shelf as a jewelry holder.