
Balustrade Spy | Creature | Vampire Rogue | Flying
When Balustrade Spy enters the battlefield, target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard. | Jaime Jones

Crypt Ghast | Creature | Spirit | Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
Whenever you tap a Swamp for mana, add an additional {B}. | Chris Rahn

Syndicate Enforcer | Creature | Human Rogue | Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) | Steven Belledin

Alms Beast | Creature | Beast | Creatures blocking or blocked by Alms Beast have lifelink. | Dan Scott

Duskmantle Seer | Creature | Vampire Wizard | Flying
At the beginning of your upkeep, each player reveals the top card of their library, loses life equal to that card's mana value, then puts it into their hand. | Kev Walker

Lazav, Dimir Mastermind | Legendary Creature | Shapeshifter | Hexproof
Whenever a creature card is put into an opponent's graveyard from anywhere, you may have Lazav, Dimir Mastermind become a copy of that card, except its name is Lazav, Dimir Mastermind, it's legendary in addition to its other types, and it has hexproof and this ability. | David Rapoza