Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

Players have no maximum hand size. At the beginning of each player's draw step, that player draws an additional card, then discards a card.

{T}: Add one mana of any color in your commander's color identity.

Whenever you discard a card, exile that card from your graveyard. {2}, {T}: Draw a card, then discard a card. {4}, {T}, Sacrifice Bag of Holding: Return all cards exiled with Bag of Holding to their owner's hand.

You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost. {T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

Creatures with power greater than the number of cards in your hand can't attack.

Whenever an opponent discards a card, you may draw a card.

Black spells you cast cost {1} less to cast.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{T}, Sacrifice Lotus Petal: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

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

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

When Burglar Rat enters the battlefield, each opponent discards a card.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for mana, add an additional {B}.

At the beginning of your upkeep, each player discards a card.

Shadow (This creature can block or be blocked by only creatures with shadow.) If a card would be put into an opponent's graveyard from anywhere, instead exile it with a void counter on it. {T}, Sacrifice Dauthi Voidwalker: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.

When Elderfang Disciple enters the battlefield, each opponent discards a card.

When Gray Merchant of Asphodel enters the battlefield, 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.)

When Mindslicer dies, each player discards their hand.

Necrogoyf's power is equal to the number of creature cards in all graveyards. At the beginning of each player's upkeep, that player discards a card. Madness {1}{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.)

When Nezumi Informant enters the battlefield, each opponent discards a card.

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

Flying, haste Whenever Rankle, Master of Pranks deals combat damage to a player, choose any number — • Each player discards a card. • Each player loses 1 life and draws a card. • Each player sacrifices a creature.

When Rotting Rats enters the battlefield, each player discards a card. Unearth {1}{B} ({1}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

At the beginning of your precombat main phase, choose one or more — • Sell Contraband — Create a Treasure token. You lose 1 life. • Buy Information — Draw a card. You lose 2 life. • Hire a Mercenary — Create a 3/2 colorless Shapeshifter creature token with changeling. You lose 3 life. (It has every creature type.)

At the beginning of each player's upkeep, that player discards a card at random.

At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.

When Court of Ambition enters the battlefield, you become the monarch. At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards.

When Hopeless Nightmare enters the battlefield, each opponent discards a card and loses 2 life. When Hopeless Nightmare is put into a graveyard from the battlefield, scry 2. {2}{B}: Sacrifice Hopeless Nightmare.

Whenever an opponent discards a card, that player loses 2 life.

At the beginning of each player's upkeep, that player discards a card.

Skip your draw step. Whenever you discard a card, exile that card from your graveyard. Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.

Whenever a player casts a spell, that player discards a card.

Whenever an opponent discards a card, you may put a quest counter on Quest for the Nihil Stone. At the beginning of each opponent's upkeep, if that player has no cards in hand and Quest for the Nihil Stone has two or more quest counters on it, you may have that player lose 5 life.

At the beginning of each opponent's upkeep, if that player has one or fewer cards in hand, they lose 3 life.

Add {B}{B}{B}. Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.

As an additional cost to cast this spell, sacrifice a creature. Add {B}{B}{B}{B}.

Add {B}{B}{B}.

If you control a commander, you may cast this spell without paying its mana cost. Exile target creature.

Target creature gets -1/-1 until end of turn for each Swamp you control.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Destroy target creature. You lose 2 life.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

{2}, {T}: Add {B} for each Swamp you control.

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.

Crypt of Agadeem enters the battlefield tapped. {T}: Add {B}. {2}, {T}: Add {B} for each black creature card in your graveyard.

{T}: Add {C}. {2}, {T}, Sacrifice Field of Ruin: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles.

{T}: Add {C}. {2}, {T}: Each player draws a card, then discards a card.

{T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

{T}: Add {B}. {B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

({T}: Add {B}.)

At the beginning of each opponent's upkeep, if that player has one or fewer cards in hand, Davriel, Rogue Shadowmage deals 2 damage to them. −1: Target player discards a card.

+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.

Each opponent discards two cards. If you control a Vampire, each opponent loses 2 life and you gain 2 life.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

Each player loses X life, discards X cards, sacrifices X creatures, then sacrifices X lands.

Search your library for a card, put that card into your hand, then shuffle.

Search your library for a card, put that card into your hand, then shuffle.

Target player reveals their hand. You choose a nonland card from it with mana value 3 or less. That player discards that card.

Target opponent discards two cards, mills a card, and loses 1 life. You gain 1 life. (To mill a card, a player puts the top card of their library into their graveyard.)

Target player discards two cards. Overload {1}{B} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Target player discards two cards.

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

Choose one or more — • Each player discards two cards. • Each player loses 4 life. • Each player sacrifices two creatures.

Each player loses 1 life, discards a card, sacrifices a creature, then sacrifices a land.

Each other player discards a card. You draw a card for each card discarded this way.

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Repeat the following process X times. Each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card.

Each opponent discards two cards.