The prophecy was one dies, one betrays and what was the other one? Iris dies, I'm assuming Killer Frost is the one that betrays but maybe that's too obvious.
Iris dies
Killer Frost (Snow turns on them)
Something happens to Joe.
That was probably the original timeline. Now it's going to change since they can change the future. Snow is turning either way though.
I'm still wondering what the "Fake Wells" comment meant. Every year Wells does something Shady so I'm waiting to see what this version does. Season 1 it was Thawne as Wells, season 2 Wells gave Zoom Barry's speed. Now this Wells who's already secretly recording conversations between Team Flash for "his book". Sounds like a lie.