I dont think it is possible. The Alliance might have a pretty powerful weapon at its disposal, but I am not really sure because I cant find the answer to the question "Is the Exodar just a space ship or does it have weapons?" If it is more than a ship I would think we could just fly it over to any capitol city and decimate it or any army on Azeroth. Im pretty sure according to lore it is rebuilt and functional at this point. At the very least we could use it like Super Mario and just go around landing on things.
What are you willing to sacrifice?
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Rosethorn Staff is the staff Mrs. Havisham from "Great Expectations" would use if she were a Druid.
We have faced trials and danger, threats to our world and our way of life. And yet, we persevere. We are the Horde. We will not let anything break our spirits!"