posted by gut
Might be why it was so important to remove his rings. Though presumably the kitchen girl already has the poison, and she might still carry out that plot even though Varys is dead (he did give her that big speech about "the greater the risk, the greater the reward").
Or maybe Bran wargs into Drogon, does a barrel roll, and Dany falls to her death.
Speaking of Varys, I was kind of thinking about your post from after the fourth episode where you mentioned the focus on Missandei at the end. To me that was one of those things, where as a pure narrative, the focus on her made sense (one of Dany's closest people getting slaughtered after she already lost Jorah and a dragon, adding to her "goin' crazy" descent), but as pure TV, it fell kind of short because on air, Dany/Missandei really didn't share a ton of screen time. Just going off the top of my head, the only memorable scene with the two was probably the first one, where Missandei was being all diplomatic to Dany while translating all the insulting dialogue that Unsullied master was dishing out. But overall, I'd say what I remember her most for were (1) the hilariously awkward joke-telling scene with her, Grey Worm and Tyrion and (2) her and Grey Worm getting closer.
And I think the whole "Varys betraying Dany" is kind of the same thing, except even more shaky when it comes to what we watched.
First, the sixth season ended with Varys recruiting Olenna Tyrell (old women whose entire family was wiped out by Cersei and the city's Wildfire stock) and the Sand Snakes (crazy bitches looking to kill people because Oberyn got killed in a fucking fair fight to the death). He specifically alluded to how they should join with Dany because of vengeance (with the words "Fire and Blood").
And then, other than maybe killing the Tarlys due to not bending the knee, Dany didn't really do anything overly Mad Queen-like in the seventh season and fought with the North against the Army of the Dead, losing a dragon and a trusted advisor/friend in the process AND THEN lost another dragon and trusted advisor/friend the instant they started moving on Kings Landing.
And suddenly, Varys is all like, "We gotta push this chick out because she WANTS power and Jon Snow doesn't, so that means he's a better choice!". Dude's supposed to be this super-clever behind-the-scenes chessmaster and he wound up coming off like this emotionally clumsy dolt who switches sides on the spur of the moment for flimsy reasons.
Kind of like how the Missandrei/Dany relationship got shorted a bit over the duration of the show, I think Varys' misgivings and how they grew about Dany also grew, as he went from on her side to wanting her dead seemingly over the course of days.