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

As Cursed Rack enters the battlefield, choose an opponent. The chosen player's maximum hand size is four.

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

{T}: Look at target player's hand.

You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

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

At the beginning of each opponent's upkeep, Skullcage deals 2 damage to that player unless they have exactly three or exactly four cards in hand.

Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards. Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Flying When Diluvian Primordial enters the battlefield, for each opponent, you may cast up to one target instant or sorcery card from that player's graveyard without paying its mana cost. If a spell cast this way would be put into a graveyard, exile it instead.

Whenever Dimir Cutpurse deals combat damage to a player, that player discards a card and you draw 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.

{1}{U}{B}: Whenever a card is put into an opponent's graveyard from anywhere this turn, that player loses 1 life. {2}{U}{B}: Target player mills two cards.

Ghastlord of Fugue can't be blocked. Whenever Ghastlord of Fugue deals combat damage to a player, that player reveals their hand. You choose a card from it. That player exiles that card.

Hexproof Whenever a creature card is put into an opponent's graveyard from anywhere, you may have Lazav, Dimir Mastermind become a copy of that card, except its name is Lazav, Dimir Mastermind, it's legendary in addition to its other types, and it has hexproof and this ability.

Trample Whenever Mindleech Mass deals combat damage to a player, you may look at that player's hand. If you do, you may cast a spell from among those cards without paying its mana cost.

Flash If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card.

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

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever Stronghold Rats deals combat damage to a player, each player discards a card.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Flying, lifelink Whenever The Haunt of Hightower attacks, defending player discards a card. Whenever a card is put into an opponent's graveyard from anywhere, put a +1/+1 counter on The Haunt of Hightower.

Flying Whenever Thief of Sanity deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, then put the rest into their graveyard. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast it.

{U}{B}, {T}: Target player loses 1 life and reveals their hand.

Flying Players play with the top card of their libraries revealed.

At the beginning of each end step, if an opponent lost 2 or more life this turn, you may put a quest counter on Bloodchief Ascension. (Damage causes loss of life.) Whenever a card is put into an opponent's graveyard from anywhere, if Bloodchief Ascension has three or more quest counters on it, you may have that player lose 2 life. If you do, you gain 2 life.

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

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Whenever an opponent discards a card, that player loses 2 life. Raid — At the beginning of your end step, if you attacked this turn, target opponent discards a card.

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

Your opponents play with their hands revealed. Sacrifice Seer's Vision: Look at target player's hand and choose a card from it. That player discards that card. Activate only as a sorcery.

Your opponents play with their hands revealed.

Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token. Whenever an opponent discards a land card, add {B}{B}. Whenever an opponent discards a noncreature, nonland card, draw a card.

Return all attacking creatures to their owner's hand.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Return target permanent to its owner's hand.

Look at target player's hand. Draw a card at the beginning of the next turn's upkeep.

Counter target spell.

Add {B}{B}{B}.

Untap all nonland permanents you control.

Draw cards equal to the number of cards target opponent discarded this turn.

Counter target spell. Look at its controller's hand.

You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost.

Counter target noncreature spell.

Look at target player's hand. Draw a card.

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.)

Return target permanent to its owner's hand. Then that player discards a card.

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

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

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

({T}: Add {U}.)

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

({T}: Add {B}.)

Each player discards all the cards in their hand, then draws that many cards minus one.

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

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

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

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

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

({U/P} can be paid with either {U} or 2 life.) Look at target player's hand. Draw a card.

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.