Shadows of the Past

Murder of Crows | Creature | Bird | Flying Whenever another creature dies, you may draw a card. If you do, discard a card. | Drew Baker

Unburial Rites | Sorcery | | Return target creature card from your graveyard to the battlefield. Flashback {3}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.) | Ryan Pancoast

Spider Spawning | Sorcery | | Create a 1/2 green Spider creature token with reach for each creature card in your graveyard. Flashback {6}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.) | Daniel Ljunggren