Herald of Hadar

Circle of Death — {5}{B}: Roll a d20.
1—9 | Each opponent loses 2 life.
10—19 | Each opponent loses 2 life and you gain 2 life.
20 | Each opponent loses 2 life and you gain 2 life. Create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Bojuka Bog

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

Bant Panorama

{T}: Add {C}.
{1}, {T}, Sacrifice Bant Panorama: Search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle.

Murmuring Mystic

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Down for Repairs

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Destroy up to one target Attraction that player controls. (It's put into their junkyard.)

Sign in Blood

Target player draws two cards and loses 2 life.

Negate

Pick-a-Beeble

Visit — Roll a six-sided die. Put a number of luck counters on Pick-a-Beeble equal to the result and create a Treasure token. Then if there are six or more luck counters on Pick-a-Beeble, claim the prize!
Prize — Create two Treasure tokens, then sacrifice Pick-a-Beeble and open an Attraction.

Island

Vraska's Fall

Each opponent sacrifices a creature or planeswalker of their choice and gets a poison counter.

Line Cutter

When Line Cutter enters, roll to visit your Attractions.

Archaeomancer

When Archaeomancer enters, return target instant or sorcery card from your graveyard to your hand.

Clay Revenant

Clay Revenant enters tapped.
{2}{B}: Return Clay Revenant from your graveyard to your hand.

Deadbeat Attendant

When Deadbeat Attendant enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Thrummingbird

Flying
Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Teferi's Time Twist

Exile target permanent you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. If it enters as a creature, it enters with an additional +1/+1 counter on it.

Tortured Existence

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

Blur

Exile target creature you control, then return that card to the battlefield under its owner's control.
Draw a card.

Mortuary Mire

Mortuary Mire enters tapped.
When Mortuary Mire enters, you may put target creature card from your graveyard on top of your library.
{T}: Add {B}.

Siren's Ruse

Exile target creature you control, then return that card to the battlefield under its owner's control. If a Pirate was exiled this way, draw a card.

Arcane Signet

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

Dissatisfied Customer

Flying, haste
When Dissatisfied Customer enters, roll a six-sided die. If the result is 3 or less, you lose that much life.

Spinny Ride

Visit — Tap target creature an opponent controls.

Gray Merchant of Asphodel

When Gray Merchant of Asphodel enters, 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.)

Consider

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Draw a card.

Counterspell

Xenosquirrels

Xenosquirrels enters with two +1/+1 counters on it.
After you roll a die, you may remove a +1/+1 counter from Xenosquirrels. If you do, increase or decrease the result by 1.

Kiddie Coaster

Visit — Creatures you control get +1/+0 until end of turn.

Command Performance

Choose two —
• Open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)
• Roll to visit your Attractions.
• You get {TK}{TK}.
• You may put a sticker on a nonland permanent you own.

Go for the Throat

Fortune Teller

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Clown Extruder

Visit — Create a 1/1 white Clown Robot artifact creature token.

Six-Sided Die

Choose target creature. Roll a six-sided die.
1 — It has base toughness 1 until end of turn.
2 — Put two -1/-1 counters on it.
3 — Six-Sided Die deals 3 damage to it and you gain 3 life.
4 — It gets -4/-4 until end of turn.
5 — Destroy it.
6 — Exile it.

Planar Incision

Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.

Ticket Turbotubes

{T}: Add one mana of any color.
{3}, {T}: You get {TK} (a ticket counter).

Command Tower

Night's Whisper

Candlekeep Sage

Commander creatures you own have "When this creature enters or leaves the battlefield, draw a card."

Ravenform

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying.
Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Ornithopter of Paradise

Ghostly Flicker

Exile two target artifacts, creatures, and/or lands you control, then return those cards to the battlefield under your control.

Displace

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.

Dimir Signet

Dark Ritual

Dart Throw

Visit — Throw a card you own from outside the game onto the playing area from a distance of three feet (about one meter). If that card touches Dart Throw, claim the prize!
Prize — Create two 2/2 pink Teddy Bear creature tokens. Sacrifice Dart Throw, then open an Attraction.

Motion Sickness

Enchant creature
When Motion Sickness enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
Whenever you visit an Attraction, you may attach Motion Sickness to target tapped creature.

Infectious Inquiry

You draw two cards and you lose 2 life. Each opponent gets a poison counter.

Pixie Guide

Flying
Grant an Advantage — If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.

Decanter of Endless Water

You have no maximum hand size.
{T}: Add one mana of any color.

Soul Swindler

As long as you've visited an Attraction this turn, Soul Swindler has indestructible. (Damage and effects that say "destroy" don't destroy it.)
When Soul Swindler enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Virulent Wound

Put a -1/-1 counter on target creature. When that creature dies this turn, its controller gets a poison counter.

Swamp

Fellwar Stone

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

Marauding Blight-Priest

Whenever you gain life, each opponent loses 1 life.

Bamboozling Beeble

Protection from Robots
{1}, {T}: The next time target player would roll one or more dice this turn, instead they roll that many dice plus one and you choose one of those rolls to ignore.

Everflowing Chalice

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.)
Everflowing Chalice enters with a charge counter on it for each time it was kicked.
{T}: Add {C} for each charge counter on Everflowing Chalice.

Culling the Weak

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

Foam Weapons Kiosk

Visit — Put a +1/+1 counter on target creature you control. That creature gains vigilance until end of turn.

Draconian Gate-Bot

When Draconian Gate-Bot enters, choose one —
• Open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)
• Destroy target Attraction. (It's put into its owner's junkyard.)

Cover the Spot

Visit — Drop three cards you own from outside the game one at a time onto the playing area from a height of at least one foot (about 0.3 meters). If those cards completely cover Cover the Spot, claim the prize!
Prize — You get {TK}{TK}{TK}{TK}, then you may put a sticker on a nonland permanent you own. Sacrifice Cover the Spot, then open an Attraction.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Thought Vessel

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

Resculpt

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

Dee Kay, Finder of the Lost

When Dee Kay, Finder of the Lost enters, open an Attraction.
Whenever you roll a 2, each opponent loses 1 life and you gain 1 life.
Whenever you roll a 4, you may tap or untap target artifact or creature.
Whenever you roll a 6, return target creature card from your graveyard to your hand.

Tragic Slip

Target creature gets -1/-1 until end of turn.
Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Drop Tower

Visit — Target creature gains flying until end of turn, or until any player rolls a 1, whichever comes first.

Murder

Defile

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

Seasoned Buttoneer

When Seasoned Buttoneer enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Cabal Ritual

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

Nimblewright Schematic

When Nimblewright Schematic enters or is put into a graveyard from the battlefield, create a 1/1 colorless Construct artifact creature token.

Costume Shop

Visit — You may put a sticker on a nonland permanent you own.

Step Right Up

Open two Attractions. (Put the top two cards of your Attraction deck onto the battlefield.)

Ponder

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Read the Bones

Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Boing!

Return target creature to its owner's hand, then roll a six-sided die. If the result is 3 or less, scry a number of cards equal to the result.

Syphon Mind

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

Mana Leak

Counter target spell unless its controller pays {3}.

Feed the Swarm

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