Armor of the Fearless Wolf

Yang noticed, or rather felt drawn to, what appeared to be an ornate golden armband, with engravings around it depicting the phases of the moon, and the full moon being depicted by the large amber gem embedded in the it, which began to glow brightly as Yang got closer to it.

"Ooh, Yang, that's definately gotta be yours," said Ruby. "It's even got your color."

"Wonder what it is," Yang said as Ruby touched the armbands glass casing, causing a hologram of Oslo Green to once again appear.

"This is a fairly interesting one," the Oslo hologram began. "The armor of the Fearless Golden Wolf of War, worn only by an individual who lives, and breaths for the thrill of battle. The Fearless Wolf, while protecting humanity, seemed to live for one thing only: battle. It scoured the world searching for the most powerful and dangerous creatures of Grimm to fight, seeking challenge after challenge. It's shining golden coat of fur attracting the Grimm away from humans and towards it, yet throughout its life, the wolf had shown no fear whatsoever, primarily due to the enhanced aura this sacred beast possessed, allowing it to recover from practically every wound it sustains in seconds. As the time came for the beasts to choose their champions, the Fearless Wolf found a knight, braver than any human it's ever met. The Wolf granted the knight a suit of armor built in its image, giving him its powerful aura, allowing him to slay any Grimm or villain that he came across with little to no fear in his courageous heart. It was said that the knight, upon the end of his days, bestowed his armor to a worthy apprentice that he, and by extent the armor, deemed as courageous as him, and this tradition continued until such a time as the sacred beast armors fell to legend and myth, and eventually into this vault where the armor now waits for any who are worthy."

"I assume that's Professor Ozpin from a previous life, right?" Yang asked after the hologram disappeared.

"Yeah," Ruby confirmed, "Apparently his name back then was Oslo Green."

"Wait, Oslo Green?" said Weiss, "I thought he seemed familiar. He was apparently friends with my grandfather back when he started his company. I've actually seen pictures of the two together on expeditions."

"Huh, small world," Yang commented. "Now let's crack this baby open."

"Yang, wait," Blake said suddenly, "This doesn't seem like a good idea. We should probably report this to the General first; before we make any more decisions we can't take back."

"Don't worry so much Blake," said Yang as she took the armband out of its container. "Rubes and Weiss went through this, and they turned out fine."

"You should take off your jacket," Ruby commented while pointing out her burnt sleeve.

"Good call," Yang said, proceeding to take her jacket off.

"If you consider having pieces of metal permanently grafted to parts of their bodies fine," Blake argued, "then we need to have a talk about your- Yang no!"

It was too late. As Blake was attempting to lecture her friend about the costs of wearing the armors, Yang had already put the armband over her upper right arm. Shortly after, Yang can feel a brief stabbing sensation in her arm, right down to the bone, where the armlet was worn. Soon after, the golden metal that the armlet began to expand, covering Yang's arm in an even layer of solid, yet somehow flexible, metal. This golden metal layer covered Yang's upper arm, stopping just above the elbow (just short of her prosthetic), and covering her right shoulder. Soon after, solid pieces of metal plating, colored also in a lighter shade of gold (but with more luster), grew from the initial metallic layer, with one covering a good portion of her upper arm, and another covering her shoulder to form a sort of shoulder pad with the amber gem from the initial armlet adorning its center. Yang took a moment to inspect her newly armored part of her body, and was surprised that it didn't hamper any freedom of movement she made with her arm in any way. Moreover, she was glad that it didn't hamper her ability to wear her current outfit as she found that she could put her jacket back on with little difficulty.

"See, Blake?" said Yang. "That wasn't so ba-AAAHHHH!" Yang suddenly dropped to her knees in pain, feeling something was wrong with the stump of her arm where her prosthetic replacement was attached. Ripping off the robotic arm, she struggled to see as something appeared to be... moving underneath the scared stump where her arm used to be; a growing pressure quickly building up there, and it kept growing until the scars where there used to be stitches burst open. Ruby, Weiss, and Blake watched with shock and bewilderment as something grew outward the scars. Yang began to feel, instead of an intense pain, a irritating soreness throughout her arm that could be felt all the way down to her fingertips, her right fingertips. It was then that she fathomed an idea of what just happened, and looked at what once was a scared stump was now a newly grown arm, not to different from the one she lost at back Beacon long ago. Yang couldn't help but shed a few tears of joy at the sight of this supposed miracle, while the other were simply shocked at the fact that the powerful aura Yang seemed to have inherited allowed her to regrow a long lost limb.

"That's amazing, Yang!" Ruby exclaimed. "Now we just need to find one for Blake and we'll be all set."

"Wait, let's not get ahead of ourselves," Blake sputtered.

However, Ruby was already looking among the various dormant armors eventually finding one that seemed to be near her cat faunus friend that seemed to be glowing without her noticing it.