Target opponent loses 3 life and you gain 3 life.

Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

At the beginning of each player's upkeep, if that player has no cards in hand, you draw a card and you lose 1 life.

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Big Game Hunter enters the battlefield, destroy target creature with power 4 or greater. It can't be regenerated.

Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

({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.

Whenever Bloodmad Vampire deals combat damage to a player, put a +1/+1 counter on it.

Madness {1}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

When Body Snatcher enters the battlefield, exile it unless you discard a creature card.

When Body Snatcher dies, exile Body Snatcher and return target creature card from your graveyard to the battlefield.

{B}, {T}, Discard a card: Add {B}{B}{B}.

{1}, Discard a card: Create a 1/1 black Vampire Knight creature token with lifelink. Activate only once each turn.

Return target black creature card from your graveyard to your hand.

Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Destroy target nonblack creature.

Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

{T}: Add {B} or {R}.

{1}, Discard a card: Transform Elusive Tormentor.

Hexproof, indestructible

Insidious Mist can't block and can't be blocked.

Whenever Insidious Mist attacks and isn't blocked, you may pay {2}{B}. If you do, transform it.

Bestow {5}{B} (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.)

Discard a creature card: Erebos's Emissary gets +2/+2 until end of turn. If Erebos's Emissary is an Aura, enchanted creature gets +2/+2 until end of turn instead.

Enchanted creature gets +3/+3.

Draw two cards, then discard two cards.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Fiery Temper deals 3 damage to any target.

Madness {R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

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}.

Whenever Gorgon Recluse blocks or becomes blocked by a nonblack creature, destroy that creature at end of combat.

Madness {B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Grave Scrabbler enters the battlefield, if its madness cost was paid, you may return target creature card from a graveyard to its owner's hand.

{T}: Add {C}.

{B/R}, {T}: Add {B}{B}, {B}{R}, or {R}{R}.

Discard a card: Transform Heir of Falkenrath. Activate only once each turn.

Flying

When Hidden Horror enters the battlefield, sacrifice it unless you discard a creature card.

Haste

Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

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

Discard a card, Sacrifice Insolent Neonate: Draw a card.

{R}, {T}, Discard a card: Destroy target blue permanent.

{1}{R}, {T}, Discard a card: Jaya Ballard, Task Mage deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

{5}{R}{R}, {T}, Discard a card: Jaya Ballard deals 6 damage to each creature and each player.

Lavaclaw Reaches enters the battlefield tapped.

{T}: Add {B} or {R}.

{1}{B}{R}: Until end of turn, Lavaclaw Reaches becomes a 2/2 black and red Elemental creature with "{X}: This creature gets +X/+0 until end of turn." It's still a land.

As an additional cost to cast this spell, discard a card or pay {5}.

Lightning Axe deals 5 damage to target creature.

+1: Each player discards a card.

-2: Target player sacrifices a creature.

-6: Separate all permanents target player controls into two piles. That player sacrifices all permanents in the pile of their choice.

Return up to two target creature cards from your graveyard to your hand, then discard a card.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Destroy target tapped creature.

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

First strike

When Nightshade Assassin enters the battlefield, you may reveal X black cards in your hand. If you do, target creature gets -X/-X until end of turn.

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Flash (You may cast this spell any time you could cast an instant.)

Enchant creature

Enchanted creature has "Discard a card: This creature gets +1/+1 until end of turn."

Skulk (This creature can't be blocked by creatures with greater power.)

When Pale Rider of Trostad enters the battlefield, discard a card.

Discard a card: Putrid Imp gains flying until end of turn.

Threshold -- As long as seven or more cards are in your graveyard, Putrid Imp gets +1/+1 and can't block.

Discard a card: Ravenous Bloodseeker gets +2/-2 until end of turn.

Trample

Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

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

{B}, Pay 1 life, Mill a card, Discard a card, Sacrifice Sinister Concoction: Destroy target creature.

({T}: Add {B} or {R}.)

Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

Attacking creatures you control have first strike.

Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.

Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

{T}: Add {C}.

{T}: Add {B} or {R}. Sulfurous Springs deals 1 damage to you.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

As an additional cost to cast this spell, discard a card.

Draw two cards.

{B}, Discard a creature card: Return target creature card from your graveyard to your hand.

Madness {2}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

As an additional cost to cast this spell, discard a card.

Draw two cards.

Whenever Wolf of Devil's Breach attacks, you may pay {1}{R} and discard a card. If you do, Wolf of Devil's Breach deals damage to target creature or planeswalker equal to the discarded card's mana value.