Time:
Frequency: Whenever in Battlemode
Class/Level: Dragoon 50
Steps:
1. Be a Hyur Midlander Dragoon in Dragoon artifact helmet or Dragoon Mythology helmet
2. Enter battlemode
3. A polygon appears out of the right side of the helmet

I had a couple friends check this out as well on their machines to make sure this wasn't a issue on my end and they also see it.

For Reference: