Ok, me and my girlfriend have had a discussion about this, and we see no easy conclusion.
If i put "poisoned wine" on a str 3 character, that have "Nymeria" attached (or some other save effect), would it then die if I scorch it with Drogon?
We have two arguments:
1) As I see it, it reaches strength 0 and dies, then she can save with Nymeria, but it is still at str 0 and dies at str 0.
2) However, the other point is also good, it only reaches str 0 once, and it is then saved by Nymeria.
We are a bit confused, and we went with 2), but which one is correct?