Hi, just won first place in the war, go us
Anyway, first thing we did was test for dragons. I put two pyros in every wave, and also equipped pyro for offense. I went through the entire raid without seeing a single dragon, on offense or defense. The only troop I spawned was pyro after 30 seconds into the raid. Nothing. Blizzard destroys them on defense, skulls and frosters destroy them on offense.
I dare say dragon was a bust, but more testing to be done. Share your experience with it if your alliance took first.