Masks

Since 0 SB it has become common practice for all Elves to wear cloths or masks to hide their souls. From necessity grew tradition, and each culture, profession and family adopted their own style.

Styles

In Errias the nobles wear masks of precious metals and gemstones. The less fortunate who can only afford wood or cloth try to imitate these masks by painting theirs glistening colours. Official Necromancers often wear masks depicting skeletons or flesh as a sign of their profession.
The Paeko pride themselves on masks made from parts of dangerous beasts, using their horns, claws, scales or leather. This also allows them to know at first glance whether someone is an accomplished hunter. Farmers and craftsmen and -women incorporate their products in their masks designs. If the product itself can not be used, masks are often carved or painted to look like it. Witches often use fluorescent colours on their masks that symbolises their knowledge of souls.
Icherians have started incorporating both Errean and Paekian mask designs, depending on the individuals fancy. Traditional masks however often depict journeys or experiences, be it with rare materials, paintings or carvings. They have also mastered the art of inlaying their masks with seams of gold or other precious metals.

Laws

The following laws are universal to all countries, unless otherwise specified. The listed punishments or the motivation of the authorities in actually following up on such infringements can vary however.
It is forbidden to remove another's mask without their permission - depending on the afflicted person, the punishment for this can range from lashings and incarceration up to the death penalty.
It is also forbidden to remove ones own mask in a public setting, but the punishment for this is much more lax and often only results in a hefty fine. The public humiliation that stems from such behaviour is much worse.
Impersonating another person by either wearing their mask (no matter if stolen or freely given), or appearing as such using magical means is forbidden. Again, depending on the rank of the person imitated, the punishments vary. Imitating a noble is punishable by death.
New masks have to be registered with the local government before they can be worn. 
A person may have multiple masks.
Altering one's own mask after registration (no matter if by magical or physical means) is forbidden. Damages must be repaired as soon as possible.
Simple masks (such as a generic wooden mask or a piece of cloth) must have the persons family crest painted clearly evident on them as a means of identification.
Certain professions may require their workers to wear specific masks or styles (for example priestesses of the Creed of Legias must wear masks consisting of multiple colours).