Mountain

Sparktongue Dragon

Flying
When Sparktongue Dragon enters, you may pay {2}{R}. When you do, it deals 3 damage to any target.

Tormented Soul

Tormented Soul can't block and can't be blocked.

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.)

Read the Bones

Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Bloody Betrayal

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

Rakdos Guildgate

This land enters tapped.
{T}: Add {B} or {R}.

Sign in Blood

Target player draws two cards and loses 2 life.

Blood Seeker

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

Dead Weight

Enchant creature
Enchanted creature gets -2/-2.

Burn Bright

Creatures you control get +2/+0 until end of turn.

Creeping Bloodsucker

At the beginning of your upkeep, Creeping Bloodsucker deals 1 damage to each opponent. You gain life equal to the damage dealt this way.

Flame-Blessed Bolt

Flame-Blessed Bolt deals 2 damage to target creature or planeswalker. If that creature or planeswalker would die this turn, exile it instead.

Tattered Apparition

Flying
{1}{B}: Tattered Apparition gets +1/+1 until end of turn.

Cinder Barrens

Cinder Barrens enters tapped.
{T}: Add {B} or {R}.

Barge In

Target attacking creature gets +2/+2 until end of turn. Each attacking non-Human creature gains trample until end of turn.

Not Dead After All

Until end of turn, target creature you control gains "When this creature dies, return it to the battlefield tapped under its owner's control, then create a Wicked Role token attached to it." (Enchanted creature gets +1/+1. When this Aura is put into a graveyard, each opponent loses 1 life.)

Yavimaya Steelcrusher

Enlist (As this creature attacks, you may tap a nonattacking creature you control without summoning sickness. When you do, add its power to this creature's until end of turn.)
{1}, Sacrifice Yavimaya Steelcrusher: Destroy target artifact.

Slate Street Ruffian

Whenever Slate Street Ruffian becomes blocked, defending player discards a card.

Glistening Goremonger

When Glistening Goremonger dies, each opponent sacrifices an artifact or creature of their choice.

Pyretic Prankster

{3}{B/P}: Transform Pyretic Prankster. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.)

Pyretic Prankster // Glistening Goremonger

Ragefire

Ragefire deals 3 damage to target creature.

Geothermal Bog

({T}: Add {B} or {R}.)
Geothermal Bog enters tapped.

Bomber Corps

Battalion — Whenever Bomber Corps and at least two other creatures attack, Bomber Corps deals 1 damage to any target.

Sam's Desperate Rescue

Return target creature card from your graveyard to your hand. The Ring tempts you.

Debtors' Transport

Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

Swamp

Batterhorn

When Batterhorn enters, you may destroy target artifact.

Ray of Ruin

Exile target creature, Vehicle, or nonbasic land. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Daybreak Combatants

Haste (This creature can attack and {T} as soon as it comes under your control.)
When Daybreak Combatants enters, target creature gets +2/+0 until end of turn.

Catalyst Elemental

Sacrifice Catalyst Elemental: Add {R}{R}.

Burning Prophet

Whenever you cast a noncreature spell, Burning Prophet gets +1/+0 until end of turn, then scry 1.

Skewer the Critics

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
Skewer the Critics deals 3 damage to any target.

Unhallowed Phalanx

Vampire's Kiss

Target player loses 2 life and you gain 2 life. Create two Blood tokens. (They're artifacts with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

Ripscale Predator

Menace (This creature can't be blocked except by two or more creatures.)

Demolish

Abrade

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

Duress

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

Kiln Fiend

Whenever you cast an instant or sorcery spell, Kiln Fiend gets +3/+0 until end of turn.

The Dross Pits

The Dross Pits enters tapped.
{T}: Add {B}.
{1}{B}, {T}, Sacrifice The Dross Pits: Draw a card.

Duskhunter Bat

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
Flying