Ok, the question may look simple, but it's causing us trouble.
Can Forced: and Continuous effects be responded to? The rules state that they can't be either modified nor cancelled, but I don't know if this also means that you can't play an acion "in response" to them, so your action resolves before the Forced or Continuous.
Also, Shoouldn't Cloud of Flies have other effect type? It looks like a kind of effect that a lot of people would want to respond to, and as it is now it's not even a Forced: .