Enchanting is a form of study for the eldar race that involves ascribing runes to a particular object in order to give it certain properties it would not have normally. Through this method, the human body can be enhanced beyond its normal capabilities. People can increase its strength, speed, endurance, and defense. An individual can make their skin as hard as steel, outrun the fastest land animal, or rapidly heal themselves at a heightened rate. These runes are specific to certain abilities, preventing them from being used together.
There are two sets of runes which are used by society. One is specifically meant for biological enhancement, with runes being placed on the skin directly and covering the entire body. The other is geared toward armor, with runes covering the material itself. There are a number of rules to this system. While they are capable of the same things, these sets of runes cannot be used together. Trying to wear both sets in order to increase their effect causes them to reject each other, canceling out their abilities.
Wraithbone is the primary construction material used by the eldar. This material is activated by the individual user, who it is psychically linked to. Armor built with this method is made specifically for one user, and will only respond to them from then on.
Biological runes seem to have the advantage over material runes. They are cheaper to use, eliminating the need for expensive materials by being placed directly on the person. They are also capable of giving the same properties and abilities to an individual. This seems to make armor somewhat redundant, as it is no longer needed to protect people. I need for armor to be able to compete with biological runes in order to justify their expenditure and make them cost effective. How can I make this happen?