Forged Destiny [Book 9: Ch. 7]

I nodded to Weiss, sealing my lips shut as we approached the CCT. The huge construct now towered up to the same height as the tallest spire in Beacon's academy.

[...]

"No. It's Purify Object. It's…" I wanted to say an enchantment, but now knowing what I did of my Skills, I knew better. "It's a spell. It's a spell that purifies `demonic taint` from an object and imbues it with protection from said taint."

"Could that be used on a weapon to wound Salem?"

"I don't think so." I'd thought of it – of course I had – but that Skill wasn't like a Rune. Maybe if I was literally swinging a sword at her head, I could think to use it, but I couldn't cast it on all the spears I was making and expect it to last. "It's temporary. I think the protection lasts a little after the fact, but if I was going to use it on her, I'd need to know something was definitely going to hit her. Or that she was definitely going to hit something."

"If I created a shield and she attacked it, then?"

"Then yeah, I think I could make the shield hold up to anything she throws at it. But she could just walk around it." I didn't want to undersell what the Skill could do, but I didn't want to oversell it either. "And I've tried it on Grimm. It doesn't make swords cut through them any harder. I don't think it'll make armour any stronger, either."

"But immune, perhaps, to Salem's magic?"

"Emphasis on the perhaps." I watched him smile. "Why are you asking, if I can ask that?"

"He wants the CCT protected," Weiss said.

"I do, indeed," Archmage Ironwood said, smiling brightly. "And I dare say that you should want it protected as well. Every Construct on the walls is one less actual person, and we can recycle fallen Constructs to create more and more. The biggest concern, as I'm sure you've realised, is Salem deciding to swat the tower down herself. Grimm, our Mages can defend the tower against. But her power, if she is as powerful as her defeating Raven Branwen suggests? It concerns me."

But if I could cast `Purify Object` over the entire tower, it might – might – become immune to her magic, assuming that magic counted as `demonic energy` which it had before. The tower was huge but due to its unique construction, it was technically `one seamless object`, and it was made of Ironwood, a substance I knew could carry my powers further and more efficiently than anything I'd ever used before.

"It could work," I said.

—Forged Destiny [Book 9: Ch. 7]