The Zassacre Zirl

When The Zassacre Zirl enters the battlefield, if you cast them, destroy target commander an opponent controls. If its owner has two or more commanders, that card stops being a commander.
When another Commander dies, draw a card.

Compleated Clone Shell

Imprint — When Compleated Clone Shell enters the battlefield, look at four random cards from your sideboard and exile one face down.
When Compleated Clone Shell dies, turn the exiled card face up. You may cast it without paying its mana cost.

Mzed, Mercenary Leader

Mono Eminence — If Mzed is on the battlefield or in your command zone and your deck's color identity is mono-red, creatures you control have haste.
At the beginning of your combat step, create a 1/1 red Mercenary creature token with "This creature can't block."
Partner (You can have two commanders if both have partner.)

Prize Wall

Defender
{U}, {T}: You get {TK}.
{4}{U}, {T}: You may put a sticker on a nonland permanent you own. Activate only as a sorcery.

The Disciple of Vess

Whenever The Disciple of Vess attacks, you may put a planeswalker card from your hand onto the battlefield. If you don't, create a token that's a copy of a Liliana planeswalker chosen at random.
(There are currently thirteen. Perhaps look up the list and roll a D20?)

The Knight of Land Drops

Partner with Knight (You may select any legendary Knight to be this creature's partner. It doesn't have to have Partner. You don't search for a Knight when this enters the battlefield.)
Knights you control have haste and "At the beginning of your end step, if you didn't play a land this turn, you may discard a card, then draw a card."

Red Priest of Yawgmoth

{T}, Sacrifice an artifact: Add an amount of {R} equal to the sacrificed artifact's mana value.

Battle Myrsphere

When Battle Myrsphere enters the battlefield, reveal cards from the top of your library until you reveal a battle card. Put it onto the battlefield, and the rest on the bottom of your library in a random order.
Whenever Battle Myrsphere attacks, you may tap X untapped battles you control (so they're oriented like a regular Magic card). If you do, Battle Myrsphere gets +X/+0 until end of turn and deals X damage to the player or permanent.

Farseeing Flockmate

Flying
Flying backup (When this creature enters the battlefield, put a flying counter on target creature. If that's another creature, it also gains the following ability until end of turn.)
Whenever this creature deals combat damage to a player, planeswalker, or battle, surveil 1.

Delve too Deep

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Target creature gets -X/-X until end of turn. If X was 7 or greater, create a 7/7 black and red Demon creature token.

The Crafter

Affinity for artifacts
When The Crafter enters the battlefield, create two colorless scrap artifact tokens. (They have no abilities.)
{T}, Sacrifice an artifact: Create an equipment token named Bling with "Equipped creature gets +1/+0" and "Equip {1}."

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.

Minotaur de Force

Haste
When Minotaur de Force enters, you get {TK}, then you may put a sticker on a nonland permanent you own.

Riku and Riku

Double strike
{U}{R}: Copy target instant or sorcery spell you control. Activate this ability only once.
{G}{U}: Copy target creature spell you control. Activate this ability only once. (Copies of permanent spells enter the battlefield as tokens.)

Taught by Narset

Commander enchantment (This aura enchants a commander creature, and remains attached to the creature as it moves between any face-up zones. You can cast it on a Commander in your command zone.)
When you cast Taught by Narset, draw a card.
Enchanted creature has prowess and ward {2}.

Ransack, the Lab

Spell commander (This card can be your commander. In Limited, it can partner like other monocolored legends.)
Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

Toralf's Disciple

Haste
Whenever Toralf's Disciple attacks, conjure four cards named Lightning Bolt into your library, then shuffle.

Kallist Rhoka

Prowess, deathtouch
When you cast Kallist Rhoka, you may choose a creature or planeswalker on the battlefield. Kallist Rhoka becomes a copy of that creature or planeswalker, and that creature or planeswalker becomes a copy of Kallist Rhoka.

Spice Rack

As Spice Rack enters the battlefield, choose an opponent.
The chosen player's maximum Commander size is one. (They can only have one commander in their command zone. If they ever have more than one, they must put any excess commanders into their graveyard.)
Cycling {2}

Carnival Barker

{T}: You have thirty seconds to laud a creature you control to any people outside the game. Until end of turn, that creature gains trample and haste and gets +X/+0, where X is the number of those people who applauded. Activate only as a sorcery and only once.

Lorthos, Tentacled Terror

Mono Eminence — As the game begins, if Lorthos is your commander and your deck's color identity is mono-blue, your starting hand size becomes 8. (You draw 8 cards and your maximum hand size is 8.)
Whenever Lorthos attacks, tap all permanents your opponent controls.
Partner (You can have two commanders if both have partner.)

Sojourner's Enforcermite

Affinity for Affinity (This card costs {1} less to cast for each permanent you control with affinity.)
Affinitycycling {2} ({2}, Discard this card: Search your library for a card with affinity, reveal it, put it into your hand, then shuffle.)

Night Out in Vegas

At the beginning of your upkeep, choose one that hasn't been chosen —
• Buffet — Create three Food tokens.
• See a Show — Create two 2/2 white Performer creature tokens.
• Play Games — Search your library for a card, put that card into your hand, discard a card at random, then shuffle.
• Go to Sleep — You lose 15 life. Sacrifice Night Out in Vegas.

Merfolk Surveyor

When Merfolk Surveyor enters the battlfield, explore-clash. If you win the explore-clash, gain 3 life. (To explore-clash, you and an opponent each reveal the top card of your respective libraries. Put any lands revealed this way into their owner's hands. Put a +1/+1 counter on this creature for each nonland card revealed this way. Then, each player who didn't get a nonland puts the card back or into their graveyard. You win the explore-clash if the mana value of your revealed card was higher.)

Hadran, Naya Sunseeder

Rulebreaker — If Hadran, Naya Sunseeder is your Commander, you may include creature cards of power 4 or greater of any color in your deck regardless of color identity.
{T}: Add one mana of any color.
Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

My Deck is About a Seven

Choose a number between 6 and 8. My Deck is About a Seven deals that much damage to target creature.

Black Tulip

{T}, Exile Black Tulip: Add three mana of any one color. You can't activate this ability until you've begun your sixth turn of the game. (Keep track if this is in your deck!)

Theopholos, Order Acolyte

Mono Eminence — As the game begins, if Theopholos is your commander and your deck's color identity is mono-white, your starting life total is increased by 10.
Whenever Theopholos attacks, if your life total is greater than your starting life total, creatures you control get +1/+1 until end of turn.
Partner (You can have two commanders if both have partner.)

Gingerbehemoth

Gingerbehemoth costs {2} less to cast for each Food you've sacrificed this turn.
Vigilance, trample
{4}, {T}, Sacrifice Gingerbehemoth: You gain 6 life.

The Scholar of Seas

Other Merfolk you control get +1/+1.
When The Scholar of Seas enters the battlefield, choose one of the following cards at random and create a token that's a copy of it:
• Judge of Currents
• Merrow Reejerey
• Lord of Atlantis
• Merfolk Sovereign
• Sygg, River Guide
• Kumena, Tyrant of Orazca

Triple Threat

If an opponent would be dealt commander damage, they receive triple that amount of commander damage instead. (They don't actually take more damage, it just counts as triple the amount of commander damage.)

Lava, Axe

Spell commander (This card can be your commander. In Limited, it can partner like other monocolored legends.)
Lava, Axe deals 5 damage to target player or planeswalker.

Polis the Planeshifter

When Polis the Planeshifter enters the battlefield, choose a plane at random from among all planechase planes. Polis the Planeshifter has all abilities of the last chosen plane. (Rolls of the planar die don't affect Polis.)
{W}{U}{B}{R}{G}: Flip a coin. If you win the flip, do Polis the Planeshifter's chaos ensues effect. If you lose the flip, choose a new plane for Polis the Planeshifter.

How Is This a Par Three?!

Whenever you cast a spell, you may have target player mill X cards, where X is the number of words in that spell's name.

Maître Tree

Tempting offer — When Maître Tree enters the battlefield, create a token from the menu. Each opponent may also create a token from the menu. For each opponent who does, you create a token of the same type.
• Treasure
• Food
• 1/1 green Squirrel
• 3/3 green Beast

The Paradise Bird

Flying
Other Birds you control get +1/+1.
{G}, {T}: Create a Birds of Paradise token.
If The Paradise Bird is your commander, your deck can include cards of any color identity.

The Horizon Seeker

Horsemanship
The Horizon Seeker gets +1/+1 for each different named keyword and ability word among permanents you control and instant or sorcery cards in your graveyard. (For example, flying, landfall, and scry count. Flavor words, like "Magical Tinkering", or game terms like "enchant creature" and "mana" do not.)

The Great Juggernaut

At the beginning of your upkeep, sacrifice The Great Juggernaut unless you discard a card.
Whenever The Great Juggernaut attacks, shuffle your library then exile the top card of your library. You may play that card without paying its mana cost this turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

The Joiner of Cats

Whenever this creature attacks, look at the top six cards of your library. You may put a Cat creature card from among them onto the battlefield tapped and attacking. Put the rest of the cards on the bottom of your library in a random order. If you don't put a card onto the battlefield this way, create a token that's a tapped and attacking copy of Lurrus of the Dream-Den.

The Knight of Commentary

Eminence — While The Knight of Commentary is in the command zone or on the battlefield, you are freely allowed to ask people for advice on your game while playing. (This includes nearby players, friends around you, and even people you message on your phone, but it all must be done in a timely fashion, courteously, and without causing large interruptions in other games.)

Magic Designer

When Magic Designer enters the battlefield, look at the top 10 cards of your library. You may reveal a playtest card from among them and put it into your hand, then put the rest on the bottom of your library in a random order.

Potatoes

{2}, {T}, Sacrifice Potatoes: Choose one —
• Boil — Potatoes deals 1 damage to any target.
• Mash — Create two Food tokens.
• Stew — Gain 3 life. Draw a card.

Quest Compleated Beast

Menace, Lifelink, Toxic 2
Quest Compleated Beast can't be blocked by tokens.
Your opponent can't gain life or remove poison counters.
Whenever Quest Compleated Beast deals combat damage to an opponent, it deals that much damage to target battle that player is protecting.

One Does Not

Enchant creature
Enchanted creature does not simply untap during its controller's untap step.
Enchanted creature has nonbasic landwalk. (It can't simply be blocked as long as defending player controls a nonbasic land.)

Guildmark

Pledge (Join a two-colored guild if you haven't already this game.)
{T}: Add one mana of your guild's colors.

The Magical City, New

The Magical City, New enters the battlefield tapped.
{T}: Add {W}, {U}, or {R}. When this mana is spent to cast a legendary spell, put a +1/+1 counter on this land.
{4}: The Magical City, New becomes a 1/1 white, blue, and red Human Artist creature until end of turn.
The Magical City, New can be your Commander. (Commander tax still applies.)

Elemental, My Dear

Investigate X times, then create an 0/0 Blue Elemental creature token. Put +1/+1 counters on that token equal to the number of Clues you control.

Simic Slaw

Whenever one or more creatures die, put a charge counter on Simic Slaw.
{2}, Sacrifice Simic Slaw: Draw X cards and gain X life, where X is the number of charge counters on Simic Slaw.

Rankle, Master of Pranksters

Flying, haste
Whenever Rankle, Master of Pranksters deals combat damage to a player, choose one at random —
• Each player creates a token that's a copy of Glen Elendra Pranksters.
• Each player creates a token that's a copy of Pyretic Prankster.
• Each player creates a token that's a copy of Spiteful Prankster.

Gather, the Townsfolk

Spell commander (This card can be your commander. In Limited, it can partner like other monocolored legends.)
Create two 1/1 white Human creature tokens.
Fateful hour — If you have 5 or less life, create five of those tokens instead.

Wistful Puppeteer

When Wistful Puppeteer enters the battlefield, create an Animated Role attached to up to one target noncreature artifact you control. (Enchanted permanent is a 4/4 artifact creature.)
Whenever one or more artifact creatures you control deal combat damage to an opponent, draw a card.

Common Curve Filler

During deckbuilding, choose a number from one to nine. Write that number in this card's mana cost, power, and toughness.

Shadowmoor Draw Spell

Untap Convoke (Each tapped creature that you untap while casting this spell pays for {1} or one mana of that creature's color. This counts as convoke.)
Draw two cards.

Welcome to Mini-apolis

Whenever an opponent casts a creature spell, create a token that's a copy of it, except it's 1/1.

Mox Poison

{T}: Add one mana of any color. You get two poison counters.

Nevermind

(Spells without mana costs can't be played)
When this spell resolves, discard a card. Then draw a card.
Splice onto Anything {1}{R} (As you cast a spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effect to that spell.)

Finishing Move

You get {TK}{TK}, then you may put a sticker on a nonland permanent you own. Target creature you control deals damage equal to its power to target creature you don't control.

Mysterious Confluence

Choose a card at random from among Righteous Confluence, Mystic Confluence, Wretched Confluence, Fiery Confluence, Verdant Confluence, Brokers Confluence, Cabaretti Confluence, Maestros Confluence, Obscura Confluence, and Riveteers Confluence. Create a copy of that card. You may cast the copy without paying its mana cost. (Roll a D10 to determine the random card.)

The Value Knight

When The Value Knight enters the battlefield, create Syr Acha, a 1/1 legendary red artifact creature Food Knight token with "{2}, {T}, Sacrifice this token: You gain 3 life. Until end of turn, if you would draw a card, draw two cards instead."
Whenever you draw a card, put a +1/+1 counter on The Value Knight.

Taught by Serra

Commander enchantment (This aura enchants a commander creature, and remains attached to the creature as it moves between any face-up zones. You can cast it on a Commander in your command zone.)
When you cast Taught by Serra, draw a card.
Enchanted creature has flying and vigilance.

Windmill Slam

Create a 4/4 Windmill artifact creature token with defender. When you do, it deals damage equal to its power to any target.
Miracle {0} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Valko Indorian, Researcher

Rulebreaker — If Valko Indorian, Researcher is your Commander, you may include all artifacts and enchantments in your deck regardless of color identity.
Artifacts and enchantments you own everywhere become both types. (This applies to your library, hand, battlefield, and so on.)
Whenever you cast an artifact or enchantment spell, put a +1/+1 counter on Valko Indorian.

Ratatwotwo

When Ratatwotwo enters the battlefield, create a Chef Role token attached to up to one other target creature you control. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, create a Food token.")
Whenever a creature you control enchanted by a Chef Role attacks or blocks, it gets +X/+X until end of turn, where X is Ratatwotwo's power.

Myojin of Night's Reach and Grim Betrayal

Myojin of Night's Reach and Grim Betrayal enters the battlefield with an indestructible counter on it if you cast it from your hand.
Remove an indestructible counter from Myojin of Night's Reach Grim Betrayal: Each opponent discards their hand. Put onto the battlefield under your control all creature cards in all graveyards that were put there from anywhere this turn.

Ambassador Blorpityblorpboop

When Ambassador Blorpityblorpboop enters, you get {TK}{TK}{TK}, then you may put a sticker on a nonland permanent you own.
At the beginning of each combat, you may have Ambassador Blorpityblorpboop's base power become equal to the total power of all stickers on permanents you control and its base toughness become equal to those stickers' total toughness.

Gerrard and Hanna

Whenever Gerrard and Hanna attacks, you gain 1 life for each card in target opponent's hand. Then, choose one —
• Return target artifact or enchantment card from your graveyard to your hand.
• Tap up to one target creature.

The Wise Sable

Judge Call! — When The Wise Sable enters the battlefield, choose one of the following six cards at random: Blood Moon; Enraging Licid; Humility; Life and Limb; Opalescence; Yavimaya, Cradle of Growth. Create a token that's a copy of the chosen card. (One easy way to determine is to roll a D6.)

The Keeper of Dark Pacts

At the beginning of your upkeep, you lose 1 life and draw a card. Then, double the amount of life you lose and cards you draw for the rest of the game from this ability. (This is true even if this leaves the battlefield and returns.)

You, Magic Playtester

{T}: Choose target playtest card. Increase or decrease a number of your choice on it by one for as long as it remains on the stack or battlefield.
{W}{U}{B}{R}{G}: Reveal the top 8 cards of your library. Put each playtest card among them into your hand, and the rest on the bottom of your library in a random order.

Avacyn and Griselbrand

Flying, vigilance, lifelink
Pay 8 life: Each creature you control gains indestructible until end of turn. Then, draw a card for each creature you control.

The Bear Force Pilot

When The Bear Force Pilot enters the battlefield, create a 0/0 colorless artifact Vehicle token with flying, "This creature gets +1/+1 for each Bear you control," and crew 2.

Artifact Unknown Shores

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Incubation Triformer

When Incubation Triformer enters the battlefield, incubate 1.
{3}: Choose target transformed Phyrexian token you control. Transform it into a third side that's a 3/3 Phyrexian Horror artifact creature.

Math is for Blockers

Damage can't be prevented this turn.
Creatures you control have double strike, trample, and must attack if able until end of turn.

Wicker Picker

Creature spells you cast have sticker kicker {1}. (You may pay an additional {1} as you cast a creature spell. If you do, you get {TK}, then you may put a sticker on it.)

The Keeper of the Yellow Hat

You can't cast Keeper of the Yellow Hat during your first seven turns of the game. (Keep track if you're playing with this!)
When The Keeper of the Yellow Hat enters the battlefield, create a legendary artifact equipment token named Yellow Hat with equip {2} and "Equipped creature gets +4/+4 and gains lifelink."

The Curve Keeper

Creatures you control get +X/+0, where X is the greatest number of consecutive nonland, nontoken permanents in a mana curve you control. (For example, if you have permanents with mana value 3, 4, and 5, creatures you control get+3/+0. If you're missing 4, they only get +1/+0.)

Bob the Claymore

Whenever equipped creature becomes blocked, each creature blocking it gets -5/-5 until end of turn.
Whenever equipped creature deals combat damage to an opponent, you may search your library for a Praetor card, reveal it, and put it into your hand. Then shuffle.
Equip {3}

Leisure Bicycle

Whenever Leisure Bicycle attacks, target creature that crewed it this turn explores.
Crew 1
Cycling {2}

The Pleasant Taxer

As The Pleasant Taxer enters the battlefield, choose casting creature spells, casting noncreature spells, searching libraries, drawing a card beyond the first each turn, or activating abilities other than mana abilities.
Doing the chosen action costs players {1} more.

Impressive Rat

When Impressive Rat dies, put a hole counter on target land you don't control. Whenever that land becomes tapped, you investigate. (The land continues to intrigue.)

Archdruid's Charm

Choose one —
• Search your library for a creature or land card and reveal it. Put it onto the battlefield tapped if it's a land card. Otherwise, put it into your hand. Then shuffle.
• Put a +1/+1 counter on target creature you control. It deals damage equal to its power to target creature you don't control.
• Exile target artifact or enchantment.

Incubob

Incubate Dark Confidant 1. (Create an Incubator Dark Confidant token with a +1/+1 counter on it and "{2}: Transform this artifact." It transforms into Dark Confidant, except it's also a Phyrexian.)
Flashback {3}{B}, Pay 3 life.

Echoing Echo

Target creature and all creatures that share a name with that creature gain echo {3} until the end of your next turn. (At the beginning of the upkeep of each of those creature's controllers, if that creature came under its owner's control since the beginning of their last upkeep, they sacrifice it unless they pay its echo cost.)

Trash Panda

When Trash Panda enters the battlefield, exile target opponent's graveyard. Create a Food token for each creature card exiled this way.
When Trash Panda dies, put it into target opponent's graveyard.
Opponent dredge 4 (If an opponent would draw a card, instead you may have them mill exactly four cards and put this card into their hand from their graveyard.)

Joven and Chandler

Backup 2 (When this creature enters the battlefield, put two +1/+1 counters on target creature. If that's another creature, it gains the following abilities until end of turn.)
Haste
Whenever this creature deals combat damage to an opponent, destroy target artifact that player controls.

Emrakul and Chatterfang

Devoid (This card has no color.)
Flying, Trample, Forestwalk, protection from non-Squirrels
When you cast Emrakul and Chatterfang, create 15 1/1 green Eldrazi Squirrel Scion creature tokens with "Sacrifice this creature: Add {G} or {B}".

Margle, Cousin of Yargle

Other creatures you control lose all abilities, can't gain abilities, and get +2/+2.

Arcbound Mamba

Deathtouch
Poison Modular 2 (This creature enters the battlefield with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target player or artifact creature. If they're put on a player this way, they become poison counters.)

Theros Charm

Choose one —
• Idyllic Tutor (Search for an enchantment.)
• Revoke Existence (Exile an artifact or enchantment.)
• Reprisal (Destroy a creature with power 4 or greater. It can't be regenerated.)

Command Power Plant

{T}: Add one mana of any color in your commander's color identity. If you control a Command Tower and a Command Mine, add two mana of any color in your commander's color identity instead.
Command Towers you control have, "{T}: If you control a Command Mine and a Command Power Plant, add three mana of any color in your commander's color identity."

The Disciple of Nissa

Whenever the Disciple of Nissa attacks, you may pay {X}{X}{X}{G}{G}. When you do, create X tokens that are copies of different Nissa planeswalkers chosen at random. They each enter with an additional loyalty counter. (There are currently eleven. Yes, Nissa, Sage Animist counts. Perhaps look up the list and roll a D20?)

Awoken Nephilim

During deck construction, name a Nephilim card originally printed in Guildpact. Awoken Nephilim has that card's color identity and is a copy of that card in all zones except it's also Legendary.

That Which Was Compleated

Ward—You get two poison counters.
Annihilator X, where X is the total number of poison counters your opponents have.
When you cast That Which Was Compleated, you may put a card an opponent owns in exile into their graveyard. If you do, they get two poison counters.

Toothy and Zndrsplt

Whenever you win a coin flip, put a +1/+1 counter on Toothy and Zndrsplt.
At the beginning of combat on your turn, flip a coin until you lose a flip.
When Toothy and Zndrsplt leaves the battlefield, draw a card for each +1/+1 counter on Toothy and Zndrsplt.

The Keeper of Kaldra

When The Keeper of Kaldra enters the battlefield, if it's the first time this ability has resolved this game, add Helm of Kaldra, Shield of Kaldra, and Sword of Kaldra as your companions. (You can pay {3} to put one into your hand from outside the game, once each. Use tokens to represent those cards.)
Creatures you control named Kaldra have hexproof.

Growth Charm

Choose one —
• Rampant Growth
• Giant Growth
• Regrowth

Glorious Anthem

Trampled Lotus

{T}, Sacrifice Trampled Lotus: Tap up to three lands your opponents control for mana. This ability has splitter second. (It can't be responded to. By, like, anything.)

Urza's Hot Dog Stand

Hexproof from red
{T}: Add {C}.
{7}, {T}: Create two Food tokens named Hot Dog.
Whenever you sacrifice a Hot Dog, create a Treasure token.
Food Crew 2 (Tap two Foods you control: This Vehicle becomes an artifact creature until end of turn.)