Shadows of the Past

Séance | Enchantment | | At the beginning of each upkeep, you may exile target creature card from your graveyard. If you do, create a token that's a copy of that card, except it's a Spirit in addition to its other types. Exile it at the beginning of the next end step. | David Rapoza

Mystic Retrieval | Sorcery | | Return target instant or sorcery card from your graveyard to your hand. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.) | Scott Chou

Barter in Blood | Sorcery | | Each player sacrifices two creatures. | Eric Deschamps

Falkenrath Noble | Creature | Vampire Noble | Flying Whenever Falkenrath Noble or another creature dies, target player loses 1 life and you gain 1 life. | Slawomir Maniak

Sever the Bloodline | Sorcery | | Exile target creature and all other creatures with the same name as that creature. Flashback {5}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.) | Clint Cearley

Skirsdag Cultist | Creature | Human Shaman | {R}, {T}, Sacrifice a creature: Skirsdag Cultist deals 2 damage to any target. | Slawomir Maniak

Demonmail Hauberk | Artifact | Equipment | Equipped creature gets +4/+2. Equip—Sacrifice a creature. | Jason Felix

Galvanic Juggernaut | Artifact Creature | Juggernaut | Galvanic Juggernaut attacks each combat if able. Galvanic Juggernaut doesn't untap during your untap step. Whenever another creature dies, untap Galvanic Juggernaut. | Lucas Graciano