You can fly outside the snow globe in capital cities and in some surrounding zones.
- Find a snow globe, there's one in Orgrimmar, Ironforge and Dalaran.
- Port out of the snow globe to a location in the same city.
- Cross fingers (fails at least half the time for no real reason).
This isn't a substitute for the Antorus buff, since it can't go outside the city zone. I think. I couldn't find a way anyway.
Still, it is pretty cool.