Form Magic

Form Magic (幻形魔法 Katachi Mahō) is a form of Caster Magic utilized by various mages.

Description
A form of Magic that revolves around channeling the power of form and mind to cause what others term as illusion. Such illusions could not only take on the aspect of real life but have a substance and solidity that could conceivably kill if employed at full level. Form Magic is really all just a matter of understanding the principles of the Universe and how they operate. The Mage’s illusions have form and substance, and if they wanted to make them deadly then they could forge a sword that could cut through steel, or a spear that would go right through battleship armor.

Mainly the thing to keep in mind is that all illusions work on the power of your beliefs. The Mage’s belief in their illusions is what gives them a solid structure, and once they lock them into a mold they maintain a self-belief in their own existence similar to an Elemental. It's not the same as being real iron or steel, or having a soul for that matter, but if they believe them good and hard then their ability to cut through objects depends on its resistance factor and if the belief of whatever they hit is stronger or not. Armor plate, after all, has the belief of the blacksmith who forges it fused into the metal helping to reinforce its structure, so if the mage’s belief is stronger than the Smith.