The dragon object has a “zigzagging” curve pattern with curves that curve to the previous curve object. You can use math for the whole thing or just be creative. “The bread and butter of my setup though was separating each point’s position to XYZ and piping each individually into sine/cosine nodes.”
To set up the dragon’s spine, convert the curve into points, instance a segment object onto a point, and align its rotation to the tangent of the curve. Check out the full explanation to see the nodes Keshmirian used.