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Okay, the BEST way to switch Articuno in is to abuse its ground immunity or predict the switch to Egg. The safest way, with no prediction, is to just bring it in on Egg. That's what I was trying to get at.
DW Bagon was available as both a male and a female as soon as it was released. Outrage isn't one of Bagon's egg moves though, so until the move tutors rolled around Salamence couldn't get Moxie, DD and Outrage on the same set.