First mentioned in chapter 1057 when Shi Feng was at the Golden Sands Exchange Shop and found three magic array designs for sale.
Description
Double Protection Barrier is a Basic Defensive Barrier Magic Array and requires 100 magical class players to activate. When activated, it forms a defensive magic array that can block all damage from the outside. It is considered the highest quality among basic magic arrays. Its design was being sold for 12,000 Magic Crystals at the Golden Sands Exchange Shop