A double-line style with a twist. Named for the Exage Viral Armada (EVA), a mutagenic virus featured in several of my own games and stories. EVA causes rapid limb bifurcation and the spontaneous generation of butterflies, both of which can be seen in various glyphs from this design.

The exact rules for this are somewhat complicated, and based on structural as well as visual analysis. The basic idea can be seen on glyphs like k and x: Closed loops (double line) are joined by single lines which turn back on themselves to create the illusion of more lines. Of course, this idea had to be modified for most of the other glyphs, for the sake of stylistic consistency and visual interest. Particularly, almost all the spurred glyphs have the double-line structures open up to form the spurs.