Didn’t really have a pattern for it, but the one tagged in the description seems to be pretty close. It’s really easy to grasp and it works really fast, I definitely recommend it for a project you need to get done quickly!!

I worked the scarf on the long side, to have the nice ripple on the edges. You can work it the other way if you prefer to have straight edges and wavy ends. It started as a basic ripple pattern, worked in multiples of 14 stitches (or 7 if you don’t mind starting at the top of a ripple and finishing at the bottom).

The basic pattern goes as follows :
Ch3 (only at the start of the row, for the repeats just replace by DC), 2DC in same st, DC in next ch 3 times, DC 3 together 2 times, DC in next ch 3 times and finish with 3 DC in same st.

To add a lacy touch, I switched every other row for this :

Ch4 (only at the start of the row, for the repeats just replace by DC, Ch1), DC in the same st, ch1, skip the next ch, DC in the next st, ch1, skip the next ch and draw up a loop on the next ch, YO, pull through 2 (you’ll still have 2 loops on your hook), skip the next ch and draw up a loop on the next ch, YO and pull through 2 (you’ll still have 3 loops on your hook), YO and pull through all, draw up a loop on the next ch, YO and pull through 2 , skip the next ch and draw up a loop on the next ch, YO and pull through 2, YO and pull through all, ch1, skip the next ch, DC in the next ch, ch1, skip the next ch, DC ch1 CD in the next st.