Mythril Variation
"I see, I see… So it takes in a signal, mana, and changes it to something else as described in those symbols in the middle. The conditions for that change to happen and to what extent are described in the outer ring, while the center describes the actual end product. And then there are special cases where the symbols in the middle are used to describe the way that the mana is taken?" Tony tried summing up the general information that Benjamin explained to him and Benji, before the old man slowly nodded.
"That's about it, yes. At the very least, this is the most common way enchantments are done, it seems like there are a lot of other forms that such an enchantment circle can take."