Shadows of the Past

Increasing Ambition | Sorcery | | Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle. Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.) | Volkan Baǵa

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

Havengul Lich | Creature | Zombie Wizard | {1}: You may cast target creature card in a graveyard this turn. When you cast it this turn, Havengul Lich gains all activated abilities of that card until end of turn. | James Ryman