Whenever another permanent enters the battlefield under your control, each opponent mills a card.

Sacrifice a creature: Add {C}{C}.

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

{T}: Add one mana of any color in your commander's color identity. Sacrifice Commander's Sphere: Draw a card.

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

Activated abilities of creature cards in your graveyard cost {1} less to activate. Tap an untapped Zombie you control: Target player mills a card.

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in their hand.

Sky Diamond enters the battlefield tapped. {T}: Add {U}.

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

You have no maximum hand size. {T}: Add {C}.

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

When Black Cat dies, target opponent discards a card at random.

Flying Whenever Blizzard Specter deals combat damage to a player, choose one — • That player returns a permanent they control to its owner's hand. • That player discards a card.

{1}{B}: Regenerate target Zombie. Morph {2}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{T}, Sacrifice a creature: Target creature gets +2/+2 until end of turn. {1}{U}{U}, Sacrifice a creature: Counter target creature spell.

{X}{B}, {T}: Target player reveals X cards from their hand and you choose one of them. That player discards that card. Activate only as a sorcery.

{T}: Target player mills a card.

Whenever Cephalid Constable deals combat damage to a player, return up to that many target permanents that player controls to their owner's hand.

Devoid (This card has no color.) {2}{U}, Put a card an opponent owns from exile into that player's graveyard: Tap target creature.

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

Flying When Doomsday Specter enters the battlefield, return a blue or black creature you control to its owner's hand. Whenever Doomsday Specter deals combat damage to a player, look at that player's hand and choose a card from it. The player discards that card.

You may cast Eternal Scourge from exile. When Eternal Scourge becomes the target of a spell or ability an opponent controls, exile Eternal Scourge.

When Fleshbag Marauder enters the battlefield, each player sacrifices a creature.

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

{B}, {T}: Choose target opponent who had at least two fewer creature cards in their graveyard than you did as you activated this ability. Destroy target nonblack creature that player controls.

{U}{B}, {T}: Create a 1/1 blue and black Zombie Wizard creature token. {U}{U}{B}{B}: Target player loses X life and mills X cards, where X is the number of Zombies you control.

Devoid (This card has no color.) When Mind Raker enters the battlefield, you may put a card an opponent owns from exile into that player's graveyard. If you do, each opponent discards a card.

Flying You may cast Misthollow Griffin from exile.

Devoid (This card has no color.) When Murk Strider enters the battlefield, you may put a card an opponent owns from exile into that player's graveyard. If you do, return target creature to its owner's hand.

Devoid (This card has no color.) {2}, Put a card an opponent owns from exile into that player's graveyard: Draw a card, then discard a card.

{X}{X}{B}: Destroy target nonblack creature with mana value X.

{T}: Destroy target tapped creature.

Flying Whenever Scythe Specter deals combat damage to a player, each opponent discards a card. Each player who discarded a card with the highest mana value among cards discarded this way loses life equal to that mana value.

Flying Inspired — Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then each opponent mills a card.

Skip your draw step. At the beginning of your upkeep, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. {B}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn.

Flying {1}{B}{B}, {T}: Target player discards a card unless they put a card from their hand on top of their library. If that player discards a card this way, Tainted Specter deals 1 damage to each creature and each player. Activate only as a sorcery.

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

Whenever a permanent deals damage to you, return it to its owner's hand.

Whenever you cast a creature spell, you may pay {1}. If you do, return target creature to its owner's hand.

At the beginning of each player's upkeep, that player loses 1 life and discards a card. Hellbent — Skip your upkeep step if you have no cards in hand. Madness {2}{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.)

If an opponent who controls at least as many lands as you do would put a land onto the battlefield, that player instead puts that land onto the battlefield then sacrifices a land.

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land. When there are no lands on the battlefield, sacrifice Mana Vortex.

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

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

Whenever a player puts a nontoken creature onto the battlefield, that player returns a land they control to its owner's hand.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand.

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Whenever a permanent is returned to a player's hand, that player discards a card.

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Counter target spell unless its controller discards their hand. Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

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

{T}: Add {C}. {1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

As Choked Estuary enters the battlefield, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters the battlefield tapped. {T}: Add {U} or {B}.

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

{T}: Add {C}. {T}: Desert deals 1 damage to target attacking creature. Activate only during the end of combat step.

Desert of the Glorified enters the battlefield tapped. {T}: Add {B}. Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

Desert of the Mindful enters the battlefield tapped. {T}: Add {U}. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

{T}: Add {C}. When Dunes of the Dead is put into a graveyard from the battlefield, create a 2/2 black Zombie creature token.

({T}: Add {U} or {B}.) Fetid Pools enters the battlefield tapped. Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Add {C}. {2}, Exile a land card from your graveyard: Hostile Desert becomes a 3/4 Elemental creature until end of turn. It's still a land.

{T}: Add {C}. {T}, Pay 1 life: Add {B}. {2}{B}{B}, {T}, Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

{T}: Add {C}. {T}, Pay 1 life: Add {U}. {1}{U}, {T}, Sacrifice a Desert: Target player mills four cards.

({T}: Add {U}.)

River Delta doesn't untap during your untap step if it has a depletion counter on it. At the beginning of your upkeep, remove a depletion counter from River Delta. {T}: Add {U} or {B}. Put a depletion counter on River Delta.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

{T}: Add {C}. {T}: Add {U} or {B}. Rootwater Depths doesn't untap during your next untap step.

{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 {U} or {B}.) Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.

({T}: Add {B}.)

{T}: Add {C}. {T}: Add {U} or {B}. Activate only if you control a Swamp.

{T}: Add {C}. {T}: Add {U} or {B}. Underground River deals 1 damage to you.

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

Look at the top three cards of target player's library. Exile any number of those cards, then put the rest back in any order. Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

If {U} was spent to cast this spell, return up to one target creature to its owner's hand. If {B} was spent to cast this spell, target player reveals their hand, you choose a nonland card from it, then that player discards that card. (Do both if {U}{B} was spent.)

As an additional cost to cast this spell, pay X life. All creatures get -X/-X until end of turn.

Each player draws two cards, then discards three cards, then loses 4 life.