It is rarely received by completing an elite Treasure Trail. This ornament kit doesn't add any bonuses to the Dragon full helm. Instead, the kit adds spiked trim to enhance the appearance. It can be removed with the "split" option, and the player will receive back both the kit and the untrimmed Dragon full helm.
The helmet cannot be traded if it has an ornament kit attached, so one must detach it so it can be traded as usual.