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.

Xenosquirrels

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

Bumper Cars

Visit — Target creature must be blocked this turn if able.

Rat in the Hat

{T}, Sacrifice this creature: Until end of turn, you may cast target creature card that has a hat from your graveyard.

Plains

Deadbeat Attendant

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

Roller Coaster

Visit — Creatures you control get +2/+0 until end of turn.

Hat Trick

Target blocking or blocked creature you control gets +1/+1 and gains first strike until end of turn. If it has a hat, it gains double strike until end of turn. If you and that creature each have a hat, the creature gains triple strike until end of turn.

Jetpack Janitor

Alpha strike (This creature has first strike as long as it's blocking or being blocked by a creature that comes after it alphabetically.)

"Brims" Barone, Midway Mobster

When "Brims" Barone, Midway Mobster enters, put a +1/+1 counter on each other creature you control that has a hat.
"Brims" Barone, Midway Mobster has menace as long as you're wearing a hat.

Yawgmoth Merfolk Soul

{TK}{TK} — When this permanent leaves the battlefield, target player discards a card.
{TK}{TK}{TK}{TK}{TK} — When this permanent leaves the battlefield, create five 1/1 white Clown Robot artifact creature tokens.
{TK}{TK} — 3/3
{TK}{TK}{TK}{TK} — 6/5

Costume Shop

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

Katerina of Myra's Marvels

As Katerina of Myra's Marvels enters, choose a letter.
Whenever you cast a spell whose name begins with the chosen letter, create a white 2/2 Cat creature token with flying.
Partner (You can have two commanders if they both have partner.)

Gobsmacked

Enchant nonland permanent
As this Aura enters, choose a person outside the game.
As long as you can see the chosen person from your seat, enchanted permanent can't attack or block, and its activated abilities can't be activated.

Swinging Ship

Visit — After the first combat phase this turn, there's an additional combat phase. At the beginning of that combat, untap all creatures that attacked this turn.

Giant Mana Cake

{TK}{TK} — When this permanent leaves the battlefield, create two Food tokens. (They're artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
{TK}{TK}{TK}{TK} — When this permanent dies, destroy target nonland permanent.
{TK}{TK} — 3/3
{TK}{TK}{TK} — 6/2

A Good Day to Pie

Tap up to two target creatures.
Whenever you put a name sticker on a creature, you may return this card from your graveyard to your hand.

Scampire

When Scampire enters, you get {TK}, then you may put a sticker on a creature card in your graveyard.
{3}{B}: Return target creature card with a sticker on it from your graveyard to the battlefield. That creature gains haste. Exile it at the beginning of the next end step. Activate only as a sorcery.

Dissatisfied Customer

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

Park Bleater

Whenever another creature you own enters, you get {TK}.
{W}, {T}: You may put a sticker on a creature you own that entered this turn.

Discourtesy Clerk

When this creature enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)
At the beginning of your end step, if you control three or more Attractions, you draw a card and you lose 1 life.

"Lifetime" Pass Holder

This creature enters tapped.
When this creature dies, open an Attraction.
Whenever you roll to visit your Attractions, if you roll a 6, you may return this card from your graveyard to the battlefield.

Scooch

Add or subtract 1 from target creature's power, target player's life total, or target die roll's result.
Draw a card.

Spooky Clown Mox

{TK}{TK} — Vigilance
{TK}{TK}{TK}{TK} — {1}, {T}: Tap target creature.
{TK}{TK} — 1/5
{TK}{TK}{TK} — 5/4

Aerialephant

Flying
When Aerialephant enters, you get {TK}, then you may put a sticker on a nonland permanent you own.

Information Booth

Sanguine Sipper

This creature has lifelink as long as you control a stickered permanent.

Scared Stiff

This creature has menace as long as you control a stickered permanent.

Swamp

Clowning Around

Create two 1/1 white Clown Robot artifact creature tokens, then roll a six-sided die. If the result is equal to or less than the number of Robots you control, create a 1/1 white Clown Robot artifact creature token.

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.)