Cinder Fall

First Strike, Menace, Skulk
When Cinder Fall enters the battlefield, search your library for Mercury Black and Emerald Sustrai and put them into your hand.
If Professor Ozpin is in your graveyard or as Oscar Pine or if Pyrrha Nikos is in your graveyard, Cinder Fall becomes the Fall Maiden.
Even if you know how the story ends, that doesn't make it any less fun to watch.