The symbols of Order. Walk'em and gain power over Shadow and near-immortality. But you'd better have that all-important bloodline... There are six full, unflawed, unbroken Patterns.

The Arcadian Pattern can be walked by those of the Blood of Amber who have learned Pattern Defense, and it will clean them out, though it can't grant them the Arcadian Pattern. (The Pattern of Amber seems to work in Arcadia with the strength of a Flawed Pattern.) Those who possess both bloods can walk both Patterns and essentially flip their imprint as necessary.

And let's not forget...