
Courier's Briefcase | Artifact | Treasure | When Courier's Briefcase enters, create a 1/1 green and white Citizen creature token.
{T}, Sacrifice Courier's Briefcase: Add one mana of any color.
{W}{U}{B}{R}{G}, {T}, Sacrifice Courier's Briefcase: Draw three cards. | Josu Hernaiz

Ashen Rider | Creature | Archon | Flying
When Ashen Rider enters or dies, exile target permanent. | Chris Rahn

Blood Baron of Vizkopa | Creature | Vampire | Lifelink, protection from white and from black
As long as you have 30 or more life and an opponent has 10 or less life, Blood Baron of Vizkopa gets +6/+6 and has flying. | Anthony Palumbo

Cartel Aristocrat | Creature | Human Advisor | Sacrifice another creature: Cartel Aristocrat gains protection from the color of your choice until end of turn. | James Ryman

Imperious Oligarch | Creature | Human Cleric | Vigilance
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.) | Johannes Voss

Sin Collector | Creature | Human Cleric | When Sin Collector enters, target opponent reveals their hand. You choose an instant or sorcery card from it and exile that card. | Mike Bierek

Athreos, God of Passage | Legendary Enchantment Creature | God | Indestructible
As long as your devotion to white and black is less than seven, Athreos isn't a creature.
Whenever another creature you own dies, return it to your hand unless target opponent pays 3 life. | Ryan Barger

Gift of Orzhova | Enchantment | Aura | Enchant creature
Enchanted creature gets +1/+1 and has flying and lifelink. | Johannes Voss

Profit | Instant | | Creatures you control get +1/+1 until end of turn.
Fuse (You may cast one or both halves of this card from your hand.) | Kev Walker

Chromanticore | Enchantment Creature | Manticore | Bestow {2}{W}{U}{B}{R}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Flying, first strike, vigilance, trample, lifelink
Enchanted creature gets +4/+4 and has flying, first strike, vigilance, trample, and lifelink. | Min Yum

Orzhov Guildgate | Land | Gate | This land enters tapped.
{T}: Add {W} or {B}. | John Avon

Shambling Vent | Land | | Shambling Vent enters tapped.
{T}: Add {W} or {B}.
{1}{W}{B}: Shambling Vent becomes a 2/3 white and black Elemental creature with lifelink until end of turn. It's still a land. | Jung Park