So, OK, the first thing is checked, Iris is dead, what will be the second in the season finale?
My guess is that the second thing involves Barry killing Savitar, so that he can go full Darth Vader mode. This has been hinted a lot during the series: Flash thinks of killing Grodd, Flash thinks of killing King Shark, Flash thinks of leaving Snart behind to die, and so on.
I think that in the end he will commit suicide, somehow, or trap himself in the speedforce, and the loop will break, thus, Savitar will not have existed at all to begin with and things will go back to normal.
My guess is that the second thing involves Barry killing Savitar, so that he can go full Darth Vader mode. This has been hinted a lot during the series: Flash thinks of killing Grodd, Flash thinks of killing King Shark, Flash thinks of leaving Snart behind to die, and so on.
I think that in the end he will commit suicide, somehow, or trap himself in the speedforce, and the loop will break, thus, Savitar will not have existed at all to begin with and things will go back to normal.