Black Book abilities

I slid open the hidden compartment. There, laying amongst the papers and detritus like a sleeping dragon, was the dark tome -- perfectly preserved, its ancient pages filled with the most powerful and forbidden magic between covers of the blackest leather.

I reached out with my magic. I felt a cold shock as I touched it with my meager ability, the book promising to unlock greater powers and mysteries than I ever dreamed of. I didn’t have to be a one-trick unicorn anymore. With this Book, I could be Magic if I wanted to, powerful enough that I was worthy of being a Bearer of that Element.

It was mine!

...

Velvet Remedy made her way to us slowly. Her horn was still glowing and beads of sweat fell down her forehead. She was pouring most of her concentration into maintaining her shield even though it was out of sight. Once we were outside, she would release it. The necrosprite swarm hadn’t left the Ministry building in over two centuries. We were hoping it wouldn’t now. I gave equal odds that either the magic woven into the Ministry walls that kept the Pink Cloud out also kept the swarm inside, or that the swarm had remained here, drawn to the presence of the Black Book like moths to a lantern.

...

What was it that Rarity told Applejack that the Black Book contained? Magic to tear souls apart.

...

The bloodswords spun back through the air at me. I felt another chill as I pulled out the Black Book, deflecting one of the swords with it as the other struck against my armor with enough force to bruise. The first sword disintegrated into flakes of ruddy powder as it rebounded from the Book.

...

Snips turned towards her, levitating the Black Book in front of him. Carefully, he read the alien words, words from a long dead zebra tongue, born of madness or possibly born of the stars. I felt my host concentrate, pouring all his focus into the spell. I felt power wash over me, not only from within but from without. Power drawn from strange, black places.

The magic was vile and repulsive. I felt violated.

Rarity lifted from the floor, beginning to float upwards as a small magical vortex pooled beneath her. The vortex of eldritch energy rose up and began to wrap itself about the unicorn mare, curling around her like a cocoon or a constricting snake. Her expression was one of mounting worry, edging swiftly toward panic… but never getting there. Instead, the screaming began.

I wanted to pull out of the memory orb. I couldn’t bear to hear those screams. Not just of pain but of nightmarish mental anguish. I remembered my hellish ride in the autonomous healing booth. What the spell was doing to Rarity was orders of magnitude worse!

The black magic washed over Snips, pooling at the tip of his horn, then taking flight. A sphere of pure void, blacker than absolute darkness, took flight from our horn and collided with the eldritch energies spinning about Rarity.

There was an explosion as darkness turned to light, and the eldritch energies transformed into a prismatic legion of shattered lights, streaking over Snips’ head, leaving bright plasma trails behind them as they homed in on their receptacles.

Snips never turned to watch. He never even looked at the soul jars. The unicorn buck only had eyes for Rarity, and he dashed to catch her as she fell, unconscious, to the floor.

But then, he didn’t have to. I already knew what they were.

...38...

Ya said ya were gonna get rid o’ that cursed thing!

I said I would burn It. And I tried. But as you can see, It doesn’t burn. I even tried to have Spike burn it. All that did was send it to Princess Celestia.

Well… ya still shoulda gotten rid o’ it!

How? I doubt anything short of a megaspell could destroy It. And I certainly don’t want to dispose of The Book where It could find Its way into the wrong hooves.

Fallout Equestria: Chapters 37 and 38