Boros Elite

Creature - Human Soldier

Battalion - Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

"First, you must fight among the rank and file. It is there I will discern your skills as a leader."
-Aurelia, to Gideon Jura

Wasteland Viper

Creature - Snake

Deathtouch

Bloodrush - , Discard Wasteland Viper: Target attacking creature gets +1/+2 and gains deathtouch until end of turn.

"The Gruul embrace all things poisonous and living in the cracks of society."
-Teysa Karlov, Grand Envoy of Orzhov

Shadow Alley Denizen

Creature - Vampire Rogue

Whenever another black creature enters the battlefield under your control, target creature gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Foundry Street Denizen

Creature - Goblin Warrior

Whenever another red creature enters the battlefield under your control, Foundry Street Denizen gets +1/+0 until end of turn.

After the Foundry Street riot, Arrester Hulbein tried to ban bludgeons. Which, inevitably, resulted in another riot.

Realmwright

Creature - Vedalken Wizard

As Realmwright enters the battlefield, choose a basic land type.

Lands you control are the chosen type in addition to their other types.

There is not a single inch of Ravnica that hasn't been altered at one point or another to fit someone's whims.

Dutiful Thrull

Creature - Thrull

: Regenerate Dutiful Thrull.

"They are useful, but there's little satisfaction in supplication that throws itself under your heel."
-Jozica, Orzhov enforcer

Spire Tracer

Creature - Elf Scout

Spire Tracer can't be blocked except by creatures with flying or reach.

Cartographers on Ravnica chart not just the horizontal, but also the vertical.

Thrull Parasite

Creature - Thrull

Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)

, Pay 2 life: Remove a counter from target nonland permanent.

The hunger of a vampire and the subtlety of a tax collector.