Since they nerfed the dropped rates on adept drops, I have received only 1 extra glaive. Farmed for hours and hours, and only 1 glaive dropped. You are far better off farming 7-win cards and turning them in, unless you're just going after engrams. They need to revert that change or noone is going to play after flawless once they figure out how bad the drop rates are.
Edit: won approximately 25 wins after flawless on a 7-win card, only got one to drop. I should have just gone flawless a couple more times and turned in 7-win cards.
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Or just go flawless multiple times and get 2 that way ?