During a quick draft game I played an Osteomancer Adept. I tapped it and there were 4 creature cards in my graveyard (no other cards). I used Osteomancer Adept's ability. When I tried to cast one of the creature cards I could not access my graveyard to forage because the cards were labelled as playable even though they were also in my graveyard. I should be able to exile those 3 creature cards to play the Bakersbane Duo using Osteomancer Adept's ability but it would not work. It did work later in the game when I had a land in my graveyard, then I was able to click and see all the cards including the creatures.