Witches exist at all levels of society, including the top echelons. These individuals summon the orgone within themselves to perform various feats of magic through invocations. This form of magic is slow, requiring ingredients, circles, and rituals that can take minutes to hours to perform. There is, however, a quicker form of magic that focuses specifically on attack and defense. This works through a series of intricate runes that are magically imbued with orgone. An individual simply focuses their power while reciting the incantation, using their physical body as a conduits for the spell.
These runes are created through the slow process of ritual magic which are then infused to the body. Different runes provide for different abilities. Some focus on enhancing the physical (strength, speed) while others give the person unique abilities (fireball, ice freeze). They also operate differently, with some offering a certain amount of times it can be reused before being applied again (3-4 shots) and others being used within a specific time frame (5-10 minutes). Runes cannot be used together or mixed (mixing enhanced strength with fireball) because one negates the other.
A system in society developed which introduced the concept of bodyguards, who are tasked with protecting these witches throughout their lives. These guards are like samurai/geisha warriors who are raised since childhood to protect their employees. Parents often give their sons to this element, and earn money from their eventual employment. Witches power up their guards with whatever runes they seem necessary for the occasion.
The reason I invented this system was to prevent witches from being overpowered. Therefore, witches are unable to use these runes themselves, or apply them to other witches. Instead, they are responsible for ritualized magic and their bodyguards are capable of instant spells to protect and guard them. The problem is why individuals who create runes with orgone are then unable to use them even though both utilize the same source of power. For some reason, runes can only work for non-magic users.
How can this be explained?