War

Jaune sat down in mediatory stance, this was it, the final Lacrima, Jaune took a deep breath in and focus and soon a glow came from his chest a black glow, Juane tried for a few minutes over and over thinking this was shadow, but nothing happened, he tried to dive into his shadow, but no cigar, Jaune punched the ground frustrated that he could figure it out and as he did it punched through easily.

Jaune pulled his fist from the ground and pushed his finger into the ground, it easily penetrated the ground, this needed further investigating, he went to the canyon for one last test.

Jaune ran one finger over one of the Canyon walls, his fingers easily cut through the canyon walls, Jaune took a gasp and then allowed the Lacrima to lose power before rushing to camp and flicking through the book, his grandmother had never told him about a dragon like this, he looked through the book until finally he found a Dragon that fit that description.

War

A dragon of legend, the War Dragon is a basic unknown, there existence itself is debatable as no fossils of these monsters have been found, the only proof of there existence is fossils of dragons that look to be carved up with a massive sword, there powers are legendary and these monsters are so powerful according to the ancient text even other dragons fear these beasts, anyone to have met one of these ferocious monsters, Dragon or Human has never lived to tell the tale.

Jaune gulped as he finished the chapter, he traced his chest, he had been given a lacrima of one of the most powerful dragons to roam Remnant!?

He was amazed that Watts had given him something this powerful… but then again had he… he most likely hadn't he most likely had stumbled upon the fossilised dragon and hadn't known what he had found and probably just assumed it was another species entirely, it made the most sense to Jaune.

But now to his bigger problem, how would he learn this, this wasn't like the other elements he had learned, heck he wasn't even sure if he could call this an element, because it pretty much wasn't, but he knew he had to try or he might activate it by accident and kill someone.

It was not an easy task, he didn't even know how it worked, but after a month he had finally found out how these powers worked, the War Dragon Lacrima, when I use turned his whole body into a dangerous weapon, his fists into blades, his fingers into knives, his skin into armour, his powers could replicate weapons.

But there was more, he reached out for Corcea More, deciding it was time for some training with it and it just flew into his hand, he experimented with this throwing the sword then reaching for it, it flew back into his grip, after a while, he could telekinetically lift this sword, he could also control it allowing it to do multiple slashes and stabs, maybe he could do this with all weapons? He would have to figure out later.

With all of this in mind, he tried to focus his War Dragon powers around a fighting style reminiscent of Pyrrha's style, he did this the best he could, because he did have a hard time to follow Pyrrha's movements at Beacon, but he did his best.

Unsurprisingly this power bonded with nothing, no element seemed to want to mix with War and to be frank Jaune didn't blame them.

In the end it took a whole three months to learn his War Dragon powers, the longest time it took to learn any of them, but he hadn't only been working on War he had been training for his other powers, he had worked to advance the rest of his Lacrima capabilities and he had also worked hard and had created four advanced techniques thus far one each for Cavern, Purgatory, Sea and Gale, he was working on more advanced techniques with other techniques.

He didn't want to advance War too much as he was scared of what its power could do if he advanced it too much, out of all his Lacrima's he needed to be the most careful with this one, because if he wasn't he had no doubt he would kill someone, so he needed to only use War when he saw fit.

This Dragons roar was… unique, it was a burst of small seated metal that took the form of swords, it was both deadly and comical, Jaune looked around since being here the canyon had taken a beating, now being covered in burn marks and cracks, once a beautiful place now it was destroyed… still better this place only be destroyed as he learned his powers and not the rest of Remnant.

But Jaune smiled, he was happy, because he had done it, he had attuned himself to all of his Lacrima's he could feel all of there powers melding to him, Cavern, Purgatory, Sea, Gale, Voltic, Arctic, Wood, War, he had done it, he was now truely God Serena.

So yeah those are his 8 Dragon Slayer Powers:

Carvern

Purgatory

Sea

Gale

Voltaic

Arctic

Wood

War

This was difficult to do, because I tried to make as many of them original as possible, I went to the Fanon wiki and found nothing really to help me with that, I did see a few for gem related Dragon Slayer magic, but I thought that might relate to the Earth too much so I could simply put it in Cavern.

There was also Cosmic, Gravity and Divine, but I felt those were way too OP, another idea I came up with was Energy, but every spell I could think of it using I could easily see being used in the War Dragon Slayer Magic, I also looked back the the dragon invasion and I noticed that most of the dragons were barely focused on, the ones focused upon the most were Mortherglare, Atlas Flame and Zirconius and even then we barely got anything.

I did turn to Mashima's Rave Master and when they were giving out elemental attributes (despite the fact it added NOTHING to the story) and I ended up smacking my forehead, because some of those elements like water and ocean… ARE THE EXACT SAME THING!… but I figured it out in the end, four that he showed, one unoriginal and three original I hope you liked it all.

And yes I know they became shorter and shorter through time, but I honestly didn't want to waste much time with them all, we now know his powers, now we can move on.