Black creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, each opponent loses 1 life and you gain 1 life.

Charcoal Diamond enters the battlefield tapped. {T}: Add {B}.

Fire Diamond enters the battlefield tapped. {T}: Add {R}.

Red creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, you may discard a card. If you do, draw a card.

{T}, Remove a counter from a permanent you control: Choose one — • Put a charge counter on target artifact. • Put a +1/+1 counter on target creature.

{T}: Add {B} or {R}. {B}{R}: Rakdos Keyrune becomes a 3/1 black and red Devil artifact creature with first strike until end of turn.

{T}: Add {B} or {R}. {B/R}{B/R}{B/R}{B/R}, {T}, Sacrifice Rakdos Locket: Draw two cards.

{1}, {T}: Add {B}{R}.

{T}: Add {C}{C}.

Creatures you control have trample. Creatures your opponents control lose trample and can't have or gain trample.

Flash Bloodcrazed Paladin enters the battlefield with a +1/+1 counter on it for each creature that died this turn.

Trample Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

At the beginning of your upkeep, if you control a black permanent, you may put a +1/+1 counter on Bloodhall Ooze. At the beginning of your upkeep, if you control a green permanent, you may put a +1/+1 counter on Bloodhall Ooze.

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.) Whenever Burning-Tree Vandal attacks, you may discard a card. If you do, draw a card.

First strike, haste Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Flying Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.) Chaos Imps has trample as long as it has a +1/+1 counter on it.

{B}, {T}, Pay 1 life: Put a +1/+1 counter on Cruel Sadist. {2}{B}, {T}, Remove X +1/+1 counters from Cruel Sadist: It deals X damage to target creature.

Trample Cryptborn Horror enters the battlefield with X +1/+1 counters on it, where X is the total life lost by your opponents this turn.

Haste Whenever Dreadhorde Butcher deals combat damage to a player or planeswalker, put a +1/+1 counter on Dreadhorde Butcher. When Dreadhorde Butcher dies, it deals damage equal to its power to any target.

{B}: Endling gains menace until end of turn. {B}: Endling gains deathtouch until end of turn. {B}: Endling gains undying until end of turn. (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.) {1}: Endling gets +1/-1 or -1/+1 until end of turn.

Menace {1}{B}, {T}, Pay 1 life: Create a Treasure token. {2}{B}: Target creature gets +2/+0 until end of turn. If mana from a Treasure was spent to activate this ability, that creature also gains deathtouch until end of turn.

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.) {1}{B}: Regenerate Grim Roustabout.

Hagra Constrictor enters the battlefield with two +1/+1 counters on it. Each creature you control with a +1/+1 counter on it has menace. (A creature with menace can't be blocked except by two or more creatures.)

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.) {2}{B}{R}, Sacrifice Hellhole Flailer: Hellhole Flailer deals damage equal to its power to target player or planeswalker.

Double strike Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Flying Whenever Immersturm Predator becomes tapped, exile up to one target card from a graveyard and put a +1/+1 counter on Immersturm Predator. Sacrifice another creature: Immersturm Predator gains indestructible until end of turn. Tap it.

Other creatures you control get +1/+0. Whenever a nontoken creature you control dies, Judith, the Scourge Diva deals 1 damage to any target.

Menace (This creature can't be blocked except by two or more creatures.) Adamant — If at least three black mana was spent to cast this spell, Locthwain Paladin enters the battlefield with a +1/+1 counter on it.

{2}, Sacrifice a creature: Lyzolda, the Blood Witch deals 2 damage to any target if the sacrificed creature was red. Draw a card if the sacrificed creature was black.

Double strike Whenever Markov Blademaster deals combat damage to a player, put a +1/+1 counter on it.

Outlast {B} ({B}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each creature you control with a +1/+1 counter on it has deathtouch.

Whenever Pyreheart Wolf attacks, creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.) Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Flying Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.) Flying {3}{R}: Skarrgan Hellkite deals 2 damage divided as you choose among one or two targets. Activate only if Skarrgan Hellkite has a +1/+1 counter on it.

Kicker {2}{B} Skyclave Shade can't block. If Skyclave Shade was kicked, it enters the battlefield with two +1/+1 counters on it. Landfall — Whenever a land enters the battlefield under your control, if Skyclave Shade is in your graveyard and it's your turn, you may cast it from your graveyard this turn.

{1}{B}, Sacrifice another creature: Put a +1/+1 counter on Skyclave Shadowcat. Whenever a creature you control with a +1/+1 counter on it dies, draw a card.

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

First strike Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

When Tenured Inkcaster enters the battlefield, put a +1/+1 counter on target creature. Whenever a creature you control with a +1/+1 counter on it attacks, each opponent loses 1 life and you gain 1 life.

Deathtouch Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Haste Whenever Thundering Raiju attacks, put a +1/+1 counter on target creature you control. Then Thundering Raiju deals X damage to each opponent, where X is the number of modified creatures you control other than Thundering Raiju. (Equipment, Auras you control, and counters are modifications.)

Whenever a creature you control attacks, it gets +2/+0 until end of turn and Anthem of Rakdos deals 1 damage to you. Hellbent — As long as you have no cards in hand, if a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

At the beginning of each upkeep, if an opponent lost life last turn, put a +1/+1 counter on target creature you control.

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

Whenever a creature blocks, Heat of Battle deals 1 damage to that creature's controller.

Whenever an opponent is dealt 3 or more damage by a single source, that player discards a card.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Until end of turn, creatures you control gain "When this creature dies, it deals 2 damage to target creature an opponent controls."

Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

Target creature gains undying until end of turn. (When it dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {B} or {R}.) Canyon Slough enters the battlefield tapped. Cycling {2} ({2}, Discard this card: Draw a card.)

Castle Embereth enters the battlefield tapped unless you control a Mountain. {T}: Add {R}. {1}{R}{R}, {T}: Creatures you control get +1/+0 until end of turn.

Castle Locthwain enters the battlefield tapped unless you control a Swamp. {T}: Add {B}. {1}{B}{B}, {T}: Draw a card, then you lose life equal to the number of cards in your hand.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped. {T}: Add {B} or {R}.

({T}: Add {R}.)

({T}: Add {B} or {R}.) Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

({T}: Add {B}.)

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Until end of turn, creatures you control gain menace and "Whenever this creature deals combat damage to a player, exile the top card of that player's library face down. You may look at and play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell."

Target creature can't block this turn. Draw a card.