Soul cultivators

Then there were special-type cultivators whose soul plates possessed two types of effects or effects that couldn't be categorized under any other category. The best example of this was Lirian, whose soul plate added a cost reduction and camouflaging effect to all his skills and even his soul energy. When a normal person casts a defensive ability like an energy barrier, their barrier would be visible, and most of their energy would be used up, but Lirian's barrier wouldn't be visible to the naked eye, and the cost of creating a barrier was also cheaper compared to others. 

Moreover, soul plates not only provided special effects to one's skills, abilities, or techniques but also had skill sockets where skill crystals, items holding great powers, could be inserted. Soul plates had the ability to draw out the power of soul crystals, making them extremely valuable.