AN: First attempt at a story. This came to me as I was reading DracoNichero21's Duelling Trigger Finger (Highly recommended). I figured if they could make Danganronpa characters duelists, I could try the same for Game of Thrones' characters.

Couple of notes for now: I am new, so I apologize for any rookie mistakes.

I have sort of fallen off of Yu-Gi-Oh for a while, So I will be sticking to the basics of the original series, and then maybe adding synchro and XYZ in later, as that was where I stopped until getting the game app. Which I will likely be using to refamiliarize myself with the cards, as well as the wiki and such.

Been a bit since I read the books, so may get some terms or such wrong. (Anyone know a conversion of Westerosi money and USD?)

Some Characters will have themed decks, but not right away and not everyone. Also, some characters are gonna be smart and occasionally switch out their cards, so if you see a point where the solution is to use a previously seen card, assume it was swapped out for a bit.

Doing 4000 LP so the duels are not too long, and each deck will be between 40-60 cards. (also, I have no idea what games were around in the medieval era, but I'm assuming they did not have playing cards.)

"Talking"

"Thinking"

Card Names (May forget to do this, probably will not when done in speech).

Without further ado, wish me luck and let us start.

Prologue- Ned

Winterfell

Lord Eddard Stark, Lord of Winterfell, Warden of the North, and head of house Stark, sat in his Solar, staring at the metal object that had attached to his arm while he slept a week ago. Like he had done since, he concentrated on it and it disappeared, the weight leaving his arm. Another moment of concentration and it had returned. He then shifted his attention to the pieces of paper, all stacked together that sat on his desk. He picked the first one up and examined it. On it was an image of some wolf with greyish green fur. "Fitting I suppose" Ned thought as he read the card. Silver Fang was its name. As he held it in his hand, he sensed a now familiar stream of information being sent to his brain.

Ned put it back on top of the deck, once it was out of his hand, the information stopped. It was still there in the back of his mind, but Ned would have to think to recall it. He gave himself over to his memories of the last week. After awakening with this mysterious metal on his arm, and the cards on his desk, he was immediately greeted by Maester Luwin.

It became apparent that Ned was not the only one to awaken to such strange items. Many in Winterfell awoke to find metal and paper in their rooms. Of the guards on the night watch, none had them at first, but after seeing them once people began to wake up, the guards could summon The Metal and paper by thinking. As for the children, everyone but Rickon, who had just turned 2 the moon before, had possessed the metal arm and deck. In the week between then and now, a son of a cook had had his 6th nameday, and The Metal had appeared on that day.

Unsure what to make of these strange events, Ned had ordered word be spread to everyone not to use either under any circumstances. While Maester Luwin sent ravens to the Citadel and other Maesters to learn of these strange events, Ned and several others had gone to the Godswood to pray for an answer.

Suddenly, a knock on the door grabbed Ned's attention back to the present. "Enter" He commanded. Maester Luwing walked into the room. "What news on the Duel Disk?" He asked the learned man.

Maester Luwin sighed and began to speak. "Strange news my Lord, and not just from the Citadel. We have learned that the objects have appeared everywhere, as far east as Norvos, perhaps further, but it appears to be everywhere. Maester Aemon on the wall can describe any card he holds, and apparently some Wildling that were captured trying to climb the wall gained them as well." Luwin took a moment to try to explain what news he had. "This goes further than we could have imagined, it appears that these cards hold great power."

"Cards?" Ned asked. He looked at the papers, "Is that what it's called?"

"I could ask you the same about the Duel Disk." Luwin pointed out.

Ned went to respond before he stopped in shock. Duel Disk, he had said that just moments ago, as if it was the most natural term. Just minutes ago, he had referred to it as "The Metal". He leaned back in his chair, "So, the more we interact with them, the more we know of them." He summarized to the Maester. After receiving a nod in agreement, he closed his eyes and asked, "What have we learned from the Citadel?"

Luwin began. "Over time the rules about the cards and how to use them will become clear, so I will leave that out for now. Strange events occurred following the appearance of the cards and disk. While the Citadel is still studying, we have news from elsewhere that these things affect our lives." Luwin took a moment to think, but also perhaps to try to come to terms with the events he was about to describe. "Apparently a thief in King's Landing attacked a merchant with the Cards. The Gold Cloaks could watch but were barred from reaching the thief. After he won the Thief was able to leave with the stolen goods and the Gold Cloaks could not lay a finger on him. However, when he tried another merchant the next day, he ended up defeated and the Gold Cloaks took him into custody."

Ned took a moment to contemplate that. If it were true, then it could lead to chaos as criminals of all stripes could escape justice. "I take it there is more?"

Luwin nodded and continued. "The most common reports we have received are children using them against each other as a game, nothing bad has happened to any of the children to do so. However, there was a tavern fight in Oldtown. One drunkard pulled a knife, only for it to disappear and for both of their disks to appear instead. Afterwards, the other drunkard won and assumed he was invincible, he ended up jumping into the port and drowning."

Ned took a moment to consider this, "So the cards will prevent harm from others unless they win but will not protect against ourselves." Thinking of this, Ned supposed that alleviated some of his fears from earlier, if every possible victim had a chance to fight back, then perhaps it was for the best. His mind wandered to the Sack of King's Landing and to the bodies wrapped in red. "If the Cards had come back then, could Elia have defended herself and her children from the Mountain?"

Luwin continued on, "There was also a story of a third born son of a minor lord in the Reach. He decided to use what little power he had to force himself onto women, only he ended up raping the bastard of a neighbouring lord who arrested him. He and his compatriot, a son of a knight, both requested trial by combat using the Cards. During the duel, his body was struck by attacks, doing actual damage to him. When he lost, his wounds proved fatal. His partner surrendered his duel, and his injuries were healed but he still felt the pain. He decided to take the Black, but the journey was too much for him and he died two days later, the traveling Crow, Yoren, who was bringing him up went to the nearest holding and the maester reported that the duel must have sapped his strength. Another criminal was sentenced to execution but requested the night's watch, the lord decided on trial by combat to decide his fate and he also sustained injury, but they healed after his victory and he is currently on his way."

Taking all of this information into account, Ned was beginning to see a pattern. "The only danger is when one party wishes it upon the other."

"Exactly so, my Lord." Luwin responded. "Given what we learned, and especially the brawl taking the knife away, it appears that this may completely overturn combat as we know it."

Ned nodded at that, if all violence had been turned into a duel, then the order of society could change drastically. He imagined the Greyjoy Rebellion, and how many died. If he was correct in his interpretation, then the very act of warfare would change. It could go from chaotic battles between large armies, with individual soldiers having no idea what is happening, to more organized single combats.

"Have this information given to everyone, inform other Maesters and lords to see if they can confirm this, and we shall inform the smallfolk what power the Cards have." Ned ordered Maester Luwin. The Maester left with a nod.

Ned entered the dining hall where his family was eating. He explained most of what Luwin had said to them. Theon then spoke up. "Me and Robb were in the Market in Winter Town. Some of the Merchants have cards for sale."

Robb nodded and explained further. "The merchants said these were different from their 'regular' cards, and they appeared with the prices already marked. Individual cards range from a few copper groats to some being worth a few gold dragons. There were little boxes of cards as well, that were only a few copper stars, but the cards were completely random."

With this news, Ned told everyone that they can do whatever they want with the game, so long as they remain safe.

After the meal Ned retired to his room. He removed the disk and examined the cards. By the end of the night he had a working knowledge of dueling. He went to bed, contemplating what kind of madness the gods must suffer from to come up with such a convoluting idea as this.

I do not own either ASOIAF or YU-GI-Oh or any related franchise. They are the property of their respective owners. This disclaimer is meant to cover the entire Fic including all future chapters.

AN: And there is the Prologue to King of Thrones! Hope you enjoy this. Hopefully I can add to this over break and after Finals.

Good luck to all of you in your lives. Hope to see you next chapter.

Regards, Jaehaerys Joestar.