Well, in the world of 'Game of Thrones' fanfiction, the possibilities are almost endless. Since the show and books have such rich lore and a large cast of characters, it's not surprising that someone would write a fanfic where Arya hatches a dragon. This kind of plot would likely involve some sort of magic or unforeseen event that leads to Arya coming across a dragon egg and then having it hatch. It could also potentially change the entire course of the story in the fanfic, as Arya with a dragon would be a very powerful force.
It might be really exciting. Arya could use the dragon to seek revenge on her enemies. The dragon could also protect her during her travels and adventures.
If Jon Snow hatches a dragon in the fanfic, it would completely disrupt the power balance in the Game of Thrones world. Dragons are extremely powerful creatures, and having one on Jon's side would make him a formidable force. He could use it to quickly travel across Westeros, intimidate his enemies, and gain more support. This would likely cause other rulers to either try to ally with him or plot against him more vehemently. The Night King and the White Walkers would also have a new and dangerous adversary, as a dragon could be a very effective weapon against them.
The origin of the egg might be a mystery left behind by some ancient civilization in Westeros. It could have been hidden for centuries and the Starks just stumbled upon it. Another possibility is that it was smuggled out of Essos by someone who thought the Starks could keep it safe. It could also be a relic from a time when dragons were more common in Westeros, and the Starks were meant to be the ones to revive their power.
If a Stark hatched a dragon egg in this fanfic, it would completely shift the power dynamics. The Starks, known for their honor and strong sense of family, would suddenly have a weapon of mass destruction at their disposal. Dragons are extremely powerful and could give the Starks an edge over their enemies. They could use the dragon to defend their territory more effectively, like The Wall. It might also make other houses more cautious about opposing the Starks, as they would fear the dragon's wrath.
One interesting plot twist could be that the OC who hatches the dragon is actually a long - lost heir to an ancient and powerful family. This family has a secret connection to the dragons, and the hatching of the dragon reveals their true heritage, leading to a power struggle among the other noble houses who fear their rise.
The OC can be developed by showing their initial fear and confusion when they first hatch the dragon. For example, they might not know what to do with this powerful and dangerous creature at first. As time goes on, they learn to bond with the dragon, which in turn builds their confidence and sense of purpose.
In the 'Game of Thrones' fanfic, 'the lost dragon' could be a dragon that has been missing or lost. Maybe it was separated from its rider during a battle or some other chaotic event in the fictional world of Westeros.
The 'the dragon cub game of thrones fanfic' could be centered around the origin of the dragon cubs. Are they a new discovery? How did they come to be? It might also involve a quest to protect them from those who would use them for evil purposes. In the world of 'Game of Thrones', where power is everything, the dragon cubs would surely be a coveted asset.