The creator of the Invisible Armor broke convention with revolutionary thinking.
Every Mage knows one thing: only one Magic Shield can exist at a time.
You can't stack Magic Shields one on top of another like nesting dolls.
This has to do with the defensive principles of a Magic Shield.
A Magic Shield is a Force Field Shield, providing 360-degree coverage with no blind spots.
Only one defensive force field can exist; a larger field will simply override a smaller one.
Recasting the spell only refreshes the field, it doesn't strengthen it.
Invisible Armor is different. Invisible Armor is a Molding Shield.
A typical Molding Shield concentrates energy in one direction, creating a Magic Shield that functions like a physical Shield.
The advantage is that its defense is concentrated, giving it higher Defense Power than a Force Field Shield of the same level.
The disadvantage is that it can only defend one direction.
