So I've been playing an Abzan displacer deck for some time now and the following interaction only just occurred to me:
I have an Eldrazi Displacer and a Wasteland Strangler in play and my opponant has two creatures.
Can I target one of his creatures, and then in response to it entering the battlefield being on top of the stack (whilst it's still in exile) flicker my wasteland strangler and put that creature into the graveyard from exile instead of back on the battlefield and obviously give another creature -3/-3?
I think the crux of the question is: is the creature targeted by eldrazi displacer intractable whilst in exile?