Arco élfico.

thingiverse

Chemi commissioned a decorative arch from a real photo. He's the one who came up with the name "elfic", and it is indeed quite unusual, but I would have called it the "Bat Wing Arch" or the "Vampiric Arch". It might work, as shown in the picture Chemi showed me, to frame a cloister or courtyard by linking several arches together. Print lying down with low layer height.