Perhaps Varys poisons someone as part of a misinformation strategy. He poisons a minor character and makes it look like it was the act of an enemy of Daenerys. This would then rally more support behind her during her pregnancy, as people would see her as the victim of an unjust attack. Meanwhile, Daenerys, being pregnant, is dealing with the internal politics of her court and trying to secure her position and that of her unborn heir.
One possible plot could be that Varys poisons someone who he believes is a threat to Daenerys's unborn child. He might be acting out of loyalty to Daenerys and her future reign. Maybe he poisons a political rival who has been spreading rumors about the paternity of the child or planning some sort of harm to Daenerys during her pregnancy.
In a more complex plot, Varys could be poisoned by someone else who wants to frame him for poisoning another person. Daenerys, being pregnant, is in a vulnerable position. This false accusation against Varys could create chaos in her court. As she tries to figure out the truth, she has to also protect her unborn child from potential threats that may arise from the power struggle within her own camp. And all of this could be part of a larger plot by an unseen enemy who wants to undermine Daenerys's rule before her child is even born.
One possible plot could be that Daenerys' pregnancy is a cause for political unrest. Varys, being poisoned, might have some knowledge about who is behind it. Maybe he was poisoned by someone who wants to use Daenerys' unborn child as a pawn in the power struggle. His death could then set off a chain of events where Daenerys has to fight even harder to protect her child and her claim to the throne, all while trying to figure out who killed Varys.
There might be such a fanfic, but it's difficult to say for certain. Fanfic writers come up with all sorts of creative and often complex storylines. However, these specific elements of Daenerys being pregnant and Varys poisoning someone might be a rather unique and perhaps not overly common combination in the world of fanfics. It could be that a writer has explored this idea for the sake of creating a new and unexpected plot twist.
I'm not sure if there is a specific fanfic exactly about that. There are a vast number of 'Game of Thrones' fanfics out there, and while the themes of Daenerys' potential pregnancy and Varys' fate (including being poisoned in some storylines) are common elements, it would be difficult to say for certain without a more in - depth search. You could try searching on fanfic - specific websites like Archive of Our Own or FanFiction.net using relevant keywords.
The fanfic might center around Daenerys's pregnancy in 8x06 as a symbol of hope. Despite all the chaos and destruction that has been going on, her unborn child could represent a new beginning. It could show her preparing for motherhood, thinking about how she wants to raise her child in a world she has fought so hard to change.
Well, perhaps in the fanfic, Aegon is initially seen as the rightful heir, but then Jon and Daenerys fall in love. Daenerys gets pregnant, and this throws the political landscape into chaos. Jon may have to fight for his place beside Daenerys and the unborn child, while Aegon might see the baby as a threat to his claim. There could be a lot of emotional turmoil, with Daenerys caught in the middle, trying to decide what's best for her child and the future of the Seven Kingdoms.
In such a fanfic, Daenerys being pregnant adds an extra layer of complexity to the revenge plot. She might initially be hesitant to act because of her unborn child, but Kinvara's actions could be so heinous that she has no choice. She could use her dragons (if they are part of the story) to intimidate Kinvara or those associated with her. She might also use her political acumen to isolate Kinvara from any support system, slowly but surely exacting her revenge while also ensuring the safety of her pregnancy.
Well, it could start with Jon and Daenerys arriving in Pentos. Maybe they are in hiding or on a diplomatic mission. Then Daenerys discovers she is pregnant. This could lead to a whole series of events. They might have to deal with local politics in Pentos as they try to protect their unborn child. Jon could be worried about the safety of his family in a foreign land, and they might face threats from various factions who either want to use the baby for their own gain or are against their union.
In this fanfic, the plot could center around the relationship between Daenerys and Ghost during her pregnancy. Does Ghost have a more sentient role? Maybe he protects her in a more involved way than normal. Daenerys could also struggle with how to introduce this unique situation to her followers. Will they accept her and the unborn child? This could lead to a lot of internal and external drama for her.
It could be about the challenges they face. Maybe Daenerys discovers she's pregnant during a difficult time, like a war or political unrest. Jon is by her side, but they both have teary eyes because of the uncertainty of the future. Their unborn child becomes a symbol of hope in a dark world.
Well, a simple idea could be that the pregnancy is a secret at first. Only a few close allies know. Jon and Daenerys have to be very careful to keep it that way. They might have some close calls where the secret almost gets out, adding a lot of tension to the story.