Pull from Eternity [Mystery Booster] World Championship Decks 2003 Set: Ravnica Allegiance Type: Creature

Set: Ravnica Allegiance Type: Creature — Human Soldier Rarity: Common Cost: {W} {1}{U}

Set: Rinascimento Type: Creature — Human Rogue Rarity: Uncommon Cost: {2}{R}{R} {1}{R}{R}

We must scrap it

Set: Magic 2014 Type: Artifact Rarity: Uncommon Cost: {3} Whenever you cast a black spell or a Swamp enters the battlefield under your control

but knowledge is a skeleton key

Pull from Eternity [Mystery Booster] World Championship Decks 2003 Set: Ravnica Allegiance Type: CreatureSet: Mystery Booster Type: Instant Rarity: Uncommon Cost: {W} Put target face up exiled card into its owner's graveyard. It is best to conquer dragons before they hatch. Femeref adage