Goblin Bookie

{R}, {T}: Reflip any coin or reroll any die. (Activate only any time it makes sense.)

Growth Spurt

Roll a six-sided die. Target creature gets +X/+X until end of turn, where X is the result.

Atinlay Igpay

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Enwhay ouyay eakspay ay onnay-igpay-atinlay ordway, acrificesay Atinlay Igpay.

Dual Doomsuits

Whenever you crank Dual Doomsuits, each time a source you control would deal damage this turn, it deals double that damage instead.

Spirit of the Season

When Spirit of the Season enters, it gains haste if it's summer. Put a +1/+1 counter on it if it's autumn. You gain 5 life if it's winter. If it's spring, search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Clever Combo

Search your library for a host card or a card with augment, reveal it, put it into your hand, then shuffle.

Handy Dandy Clone Machine

{2}, {T}: Create a 2/2 colorless Homunculus creature token. It must be represented by a unique hand and two fingers at all times, or it ceases to exist.

Accessories to Murder

Whenever you crank Accessories to Murder, target creature gets +X/+0 until end of turn, where X is the number of creatures you control.

Mad Science Fair Project

{T}: Roll a six-sided die. On a 3 or lower, target player adds {C}. Otherwise, that player adds one mana of any color they choose.

Sly Spy

Whenever Sly Spy deals combat damage to a player, roll a six-sided die. That player loses life equal to the result.

Bone Rattler

When Bone Rattler is put into your graveyard from anywhere, exile it. When you do, create four Reassembling Skeleton token cards and put them into your graveyard.

Transcantation

Target instant or sorcery spell becomes a copy of Lightning Bolt. Its controller may choose new targets for it.

Evil Boros Charm

Choose one —
• Evil Boros Charm deals 2 damage to any target and you gain 2 life.
• Unblocked attacking creatures get +1/+0 until end of turn.
• Create a 1/1 colorless Spirit creature token with lifelink and haste.

Imaginary Friends

Create three 0/0 white Spirit creature tokens with flying.

Alexander Clamilton

Whenever you cast a wordy spell, scry 2. (A spell is wordy if it has four or more lines of rules text.)
{1}{R}, {T}: Choose target creature you don't control. Reveal the top card of your library. Alexander Clamilton gets +X/+0 until end of turn, where X is the number of lines of rules text of the revealed card. Alexander Clamilton fights that creature.

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.)

Witty Demon

Flying
When Witty Demon enters, if your starting library had at least 13 cards over the minimum, search your library for a card and put that card into your hand, then shuffle your library. Otherwise, Witty Demon deals 4 damage to you.

Fire

Fire deals 2 damage divided as you choose among one or two targets.

Start

Create two 1/1 white Warrior creature tokens with vigilance.

Start // Fire

Incite Insight

Assemble X Contraptions. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

Garbage Elemental

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
When Garbage Elemental enters, roll a six-sided die. Garbage Elemental deals damage equal to the result to target opponent or planeswalker.

Super-Duper Death Ray

Trample (This spell can deal excess damage to its target's controller.)
Super-Duper Death Ray deals 4 damage to target creature.

Patient Turtle

Patient Turtle enters with two +1/+1 counters on it if you didn't go first this game.

Despondent Killbot

Growth Charm

Choose one —
• Rampant Growth
• Giant Growth
• Regrowth

Turbo-Thwacking Auto-Hammer

Whenever you crank Turbo-Thwacking Auto-Hammer, target creature gains double strike until end of turn.

Chicken à la King

Whenever a 6 is rolled on a six-sided die, put a +1/+1 counter on each Bird. (You may roll dice only when instructed to.)
Tap an untapped Bird you control: Roll a six-sided die. (Like now.)

Acornelia, Fashionable Filcher

Whenever you cast a spell with a squirrel in its art, you get {A} (an acorn counter).
Whenever a Squirrel you control enters or dies, you get {A}.
{2}{B}, Pay X {A}: Target creature gets -X/-X until end of turn.
{G}, Pay X {A}: Target creature gets +X/+X until end of turn.

Monkey-

Whenever a nontoken creature you control dies,
Augment {2}{G} ({2}{G}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Baron Von Count

Baron Von Count enters with a doom counter on "5."
Whenever you cast a spell with the indicated numeral in its mana cost, text box, power, or toughness, move the doom counter one numeral to the left.
When the doom counter moves from "1," destroy target player and put that doom counter on "5."

Lobe Lobber

Equipped creature has "{T}: This creature deals 1 damage to target player or planeswalker. Roll a six-sided die. On a 5 or higher, untap it."
Equip {2}

Treacherous Trapezist

Flying
Whenever you cast an alliterative spell, scry 2. (Anything with two or more capitalized words in its name that begin with the same letter is alliterative.)
Other alliterative creatures you control have flying.

Arms Depot

Whenever you crank Arms Depot, put two +1/+1 counters on target creature.

Gimme Five

You gain 1 life for each person who high-fives you in the next thirty seconds. Each player in an Un-game who high-fives you gains 1 life. (Offer high fives. Don't hit people.)

Vorthos, Steward of Myth

As Vorthos, Steward of Myth enters, choose a named Magic character.
Each spell you cast with the chosen character in its name, flavor text, or art costs {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.

Tainted Monkey

{T}: Choose a word. Target player mills a card. If a card with the chosen word in its text box was milled this way, they lose 3 life.

Chivalrous Chevalier

Flying
When Chivalrous Chevalier enters, return a creature you control to its owner's hand unless you compliment an opponent.

Tread Mill

Whenever you crank Tread Mill, until end of turn, target creature gets +1/+2, gains vigilance, and becomes an artifact in addition to its other types.

Alpha Guard

When Alpha Guard enters, choose a letter.
{T}: Untap another target permanent whose name starts with the chosen letter.

Pippa, Duchess of Dice

{2}{G}, {T}: Roll a six-sided die. It becomes a green Die creature token with power and toughness each equal to its result.
{2}{U}, {T}: Reroll any die. (Activate only any time it makes sense.)

Gorilla Tactics

Create a 2/2 green Gorilla creature token.
When a spell or ability an opponent controls causes you to discard Gorilla Tactics, create two 2/2 green Gorilla creature tokens.

GO TO JAIL

When GO TO JAIL enters, exile target creature an opponent controls until GO TO JAIL leaves the battlefield.
At the beginning of the upkeep of the exiled card's owner, that player rolls two six-sided dice. If they roll doubles, sacrifice GO TO JAIL.

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.

S.N.E.A.K. Dispatcher

{2}{U}, {T}: Look at the top card of target player's library. If it has an Agents of S.N.E.A.K. watermark, you may reveal it and put it into your hand. Otherwise, put it on your choice of the top or bottom of its owner's library.

Icing Manipulator

Each +1/+1 counter on a creature you control is also a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
{3}{G}, {T}: Roll two six-sided dice. For each odd result, put a +1/+1 counter on a creature of your choice. Activate only as a sorcery.

Red Herring

{1}{U}: Exchange Red Herring from your hand with a permanent you control on the battlefield or a spell you control on the stack. If that permanent or spell was the target of a spell or ability, change that target to Red Herring.

Avatar of Me

This spell costs {1} more to cast for each ten years you've been alive.
Avatar of Me's power is equal to your height in feet and its toughness is equal to your American shoe size. Round to the nearest ½.
Avatar of Me is the color of your eyes.

Busted!

Counter target spell unless its controller pays {X}, where X is the number of words in the name with the most words among permanents you control.

Waste Land

{T}: Add {C}.
{T}, Sacrifice Waste Land: Destroy target nonbasic land. That land's controller creates a Wastes token. (It's a land with {T}: Add {C}.)

Steamflogger Temp

{6}, {T}: Steamflogger Temp assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Generated Horizons

At the beginning of your upkeep, create a Forest land token.

As Luck Would Have It

Hexproof
Whenever you roll a die, put a number of luck counters on As Luck Would Have It equal to the result. Then if there are 100 or more luck counters on As Luck Would Have It, you win the game. (Count both rolls if you reroll a die.)

Unleash (You may have this creature enter with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)
Each creature you control with any kind of counter on it has art menace. (They can't be blocked except by creatures with two or more visible figures in their art.)

Snickering Squirrel

You may tap Snickering Squirrel to increase the result of a die any player rolled by 1.

Assquatch

Each other Donkey gets +1½/+1½.
Whenever another Donkey enters, untap target creature and gain control of it until end of turn. That creature gains haste until end of turn.

Visitor from Planet Q

All creature cards you own with flash are instants in addition to their other types.
Whenever you cast another spell with two or more card types, you may draw a card, then discard a card.

Half-Shark, Half-

At the beginning of your upkeep,
Augment {5}{U} ({5}{U}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Ineffable Blessing

As Ineffable Blessing enters, choose an artist.
Whenever a creature with art by the chosen artist enters under your control, draw a card.

Buzz Buggy

Whenever you crank Buzz Buggy, target creature gets +2/+0 and gains trample until end of turn.

Genetic Recombinator

Whenever you crank Genetic Recombinator, up to two target creatures each get +2/+2 until end of turn.

Mandatory Friendship Shackles

Whenever you crank Mandatory Friendship Shackles, target creature gets -1/-1 until end of turn.

Hurloon Wrangler

Denimwalk (This creature can't be blocked as long as defending player is wearing denim.)

Angelic Rocket

Flying
When this creature enters, you may destroy target nonland permanent.

Hot Fix

You have ten seconds to look at and rearrange the cards in your library. At the end of those ten seconds, if you're touching one or more of those cards, shuffle.

Mother of Goons

Whenever a creature an opponent controls dies, sacrifice Mother of Goons unless you insult that creature.

Knight in _____ Armor

First strike
As this creature enters, you may put a name sticker on it.
This creature has protection from names that start with the same letter as a name sticker on it.

Mobile Clone

Using a mobile device, take a picture of target creature. That device enters as a token that's a photocopy of the pictured creature. (Photocopies include Auras, Equipment, counters, and stickers in the shot. Don't touch other people's phones without permission and be careful if you do.)

Flaccify

Counter target spell unless its controller pays {3}{½}.

Uktabi Kong

Trample
When Uktabi Kong enters, destroy all artifacts.
Tap two untapped Apes you control: Create a 1/1 green Ape creature token.

capital offense

target creature gets -x/-x until end of turn, where x is the number of times a capital letter appears in its rules text. (ignore reminder text and flavor text.)

Interplanar Brushwagg

Interplanar (This creature enters onto the interplanar battlefield. Players can't control creatures on the interplanar battlefield.)
Vigilance, haste
Whenever a player attacks with a creature with power 4 or greater, Interplanar Brushwagg also attacks the player or planeswalker that creature is attacking.

Side to Side

You and target opponent arm-wrestle. If you win, create a 3/3 green Ape creature token.

Bombardment

Until end of turn, cards you own that aren't on the battlefield lose all card types, costs, names, and abilities and become red sorceries named Missile that cost {R} with "Missile deals 2 damage to any target."

Jermane, Pride of the Circus

{G}, {T}: Put two +1/+1 counters on target creature with four or more legs.
{1}{G}{G}, {T}: Until end of turn, all creatures able to block target creature with four or more legs do so.

Granny's Payback

Urza, Academy Headmaster

+1: Head to AskUrza.com and click +1.
−1: Head to AskUrza.com and click -1.
−6: Head to AskUrza.com and click -6.

Oddly Uneven

Choose one —
• Destroy each creature with an odd number of words in its name. (Hyphenated words are one word.)
• Destroy each creature with an even number of words in its name.

Mary O'Kill

{1}{B/R}: Switch a Killbot or Mary O'Kill in your hand with one on the battlefield. (If a creature is tapped, the switched creature is tapped. The same is true for untapped, attacking, blocking, enchanted, equipped, and targeted. Any counters on a creature are on the switched creature instead.)

Pie-roclasm

Pie-roclasm deals π damage to each non-Clown creature. (How to calculate π isn't important. It's a smidgen more than 3.)

Omniclown Colossus

Affinity for Clowns (This spell costs {1} less to cast for each Clown you control.)
Trample

Omniclown Colossus // Pie-roclasm

Recycla-bird

Flying
When Recycla-bird dies, put a flying counter on target creature you control.

Drawn Together

As Drawn Together enters, choose an artist.
Creatures with art by the chosen artist get +2/+2.

Time Out

Roll a six-sided die. Put target nonland permanent into its owner's library just beneath the top X cards of that library, where X is the result.

Kaya, Ghost Haunter

0: Exile Kaya, Ghost Haunter haunting target creature for as long as that creature remains on the battlefield.
−1: You get an emblem with, "At the beginning of your upkeep, this emblem deals 3 damage to the owner of target haunted creature."
−2: You get an emblem with, "At the beginning of your upkeep, gain control of target haunted creature for as long as it remains haunted."

Gnome-Made Engine

When this creature enters, create a 1/1 colorless Gnome artifact creature token.

Ricochet

Whenever a player casts a spell that targets a single player, each player rolls a six-sided die. Change the target of that spell to the player with the lowest result. Reroll to break ties, if necessary.

Novellamental

Flying
Novellamental can block only creatures with flying.

Incoming!

Each player searches their library for any number of artifact, creature, enchantment, and/or land cards, puts them onto the battlefield, then shuffles.

Shaggy Camel

When this creature enters, creatures you control get +1/+1 until end of turn.

Enter the Dungeon

Players play a Magic subgame under the table, starting at 5 life and using their libraries as their decks. The winner searches their library for two cards, puts those cards into their hand, then shuffles.

Evil Presents

Put a creature card from your hand into play under target opponent's control. That creature attacks each turn if able . . . and always attacks its controller.

Numbing Jellyfish

When this creature enters, roll a six-sided die. Target player mills X cards, where X is the result.

Fowl Play

Enchant creature
Enchanted creature loses all abilities and is a Bird creature with base power and toughness 1/1.

Very Cryptic Command

Choose two —
• Draw a card from an opponent's library.
• Copy target instant or sorcery spell. You may choose new targets for the copy.
• Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1.
• Create a 1/1 colorless Gnome artifact creature token.

Insufferable Syphon

Whenever you crank Insufferable Syphon, target player discards a card.

Stack of Paperwork

When Stack of Paperwork enters, draw a card.
Combat damage uses the stack. (Combat damage assignment can be responded to before damage is dealt.)

Steam-Powered

{5}:
Augment {4} ({4}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Liberate

Exile target creature you control. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Bind

Counter target activated ability. (Mana abilities can't be targeted.)
Draw a card.

Bind // Liberate

Whenever Sly Spy deals combat damage to a player, that player reveals their hand. You choose a card from it with the longest name. That player discards that card.

Tibalt the Chaotic

+1: Cast a copy of one of the following cards chosen at random—Ignorant Bliss, Crack the Earth, Blazing Volley.
−3: Cast a copy of one of the following cards chosen at random—Seething Song, Dance with Devils, Flamebreak.
−6: Cast a copy of one of the following cards chosen at random—Hellion Eruption, Insurrection, Warp World.