Gray Merchant of Asphodel

When this creature enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Divest

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

Victim of Night

Destroy target non-Vampire, non-Werewolf, non-Zombie creature.

Burglar Rat

When this creature enters, each opponent discards a card.

Vampire Sovereign

Flying
When this creature enters, target opponent loses 3 life and you gain 3 life.

Nezumi Road Captain

Menace
Vehicles you control have menace. (They can't be blocked except by two or more creatures.)

Okiba Reckoner Raid

(As this Saga enters and after your draw step, add a lore counter.)
I, II — Each opponent loses 1 life and you gain 1 life.
III — Exile this Saga, then return it to the battlefield transformed under your control.

Okiba Reckoner Raid // Nezumi Road Captain

Bile Blight

Target creature and all other creatures with the same name as that creature get -3/-3 until end of turn.

Wretched Anurid

Whenever another creature enters, you lose 1 life.

Swamp

Moment of Craving

Target creature gets -2/-2 until end of turn. You gain 2 life.

Trespasser's Curse

Enchant player
Whenever a creature enchanted player controls enters, that player loses 1 life and you gain 1 life.

Tendrils of Corruption

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

Echoing Decay

Target creature and all other creatures with the same name as that creature get -2/-2 until end of turn.

Serrated Scorpion

When this creature dies, it deals 2 damage to each opponent and you gain 2 life.

Thorn of the Black Rose

Deathtouch
When this creature enters, you become the monarch.

Gurmag Angler

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Distress

Target player reveals their hand. You choose a nonland card from it. That player discards that card.

Cuombajj Witches

{T}: This creature deals 1 damage to any target and 1 damage to any target of an opponent's choice.

Carnophage

At the beginning of your upkeep, tap this creature unless you pay 1 life.

Geth's Verdict

Target player sacrifices a creature of their choice and loses 1 life.

Crypt Rats

{X}: This creature deals X damage to each creature and each player. Spend only black mana on X.

Phyrexian Rager

When this creature enters, you draw a card and you lose 1 life.

Chittering Rats

When this creature enters, target opponent puts a card from their hand on top of their library.

Shadow Alley Denizen

Whenever another black creature you control enters, 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.)

Sign in Blood

Target player draws two cards and loses 2 life.

Diabolic Edict

Target player sacrifices a creature of their choice.

Grasp of Darkness

Target creature gets -4/-4 until end of turn.

Dauthi Slayer

Shadow (This creature can block or be blocked by only creatures with shadow.)
This creature attacks each combat if able.

Bone Picker

This spell costs {3} less to cast if a creature died this turn.
Flying, deathtouch

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Sudden Edict

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Target player sacrifices a creature of their choice.

Seekers' Squire

When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)