The Hippodrome

All creatures get -5/-0.
Whenever chaos ensues, you may destroy target creature if its power is 0 or less.

Realms Befitting My Majesty

When you set this scheme in motion, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Mutual Epiphany

When you encounter Mutual Epiphany, each player draws four cards. (Then planeswalk away from this phenomenon.)

Tember City

Whenever a player taps a land for mana, Tember City deals 1 damage to that player.
Whenever chaos ensues, each other player sacrifices a nonland permanent of their choice.

Rotted Ones, Lay Siege

When you set this scheme in motion, for each opponent, create a 2/2 black Zombie creature token that attacks that player each combat if able.

Wanted!

Before the game, shuffle at least 6 unique bounty cards into a face-down pile.
As the starting player's third turn begins, reveal the top bounty card.
Claim the revealed bounty during your turn and collect your reward!
As each turn begins, if no bounty is being offered, reveal the next one. If the pile is empty, shuffle all claimed bounties and restock
If the bounty went unclaimed last turn, increase its reward to the next level.
Rewards
1 — Create a Treasure token
2 — Create two Treasure tokens
3 — Create two Treasure tokens *or* draw a card
4 — (Max) Create two Treasure tokens *and* draw a card.

Bounty: Sleepy Sovka

At the beginning of your end step, if you cast no spells this turn, collect your reward.

Bounty: Sleepy Sovka // Wanted!

Cloak of the Philosopher

Equipped creature gets +1/+1.
{2}: Untap equipped creature.
Equip {2}

The Eon Fog

Players skip their untap steps.
Whenever chaos ensues, untap all permanents you control.

The Dead Shall Serve

When you set this scheme in motion, for each opponent, put up to one target creature card from that player's graveyard onto the battlefield under your control. Each of those creatures attacks its owner each combat if able.

Your Will Is Not Your Own

When you set this scheme in motion, gain control of target creature an opponent controls until end of turn. Untap that creature. It gets +3/+3 and gains trample and haste until end of turn.

Academy at Tolaria West

At the beginning of your end step, if you have no cards in hand, draw seven cards.
Whenever chaos ensues, discard your hand.

Chaotic Aether

When you encounter Chaotic Aether, each blank roll of the planar die is a {CHAOS} roll until a player planeswalks away from a plane. (Then planeswalk away from this phenomenon.)

Lash of the Tyrant

Equipped creature gets +1/+2 and has deathtouch.
Equip {2}

The Great Forest

Each creature assigns combat damage equal to its toughness rather than its power.
Whenever chaos ensues, creatures you control get +0/+2 and gain trample until end of turn.

Savage Vigor Head

At the beginning of the Hydra's end step, reveal the top card of the Hydra's library and the Hydra casts that card.
Hero's Reward — When Savage Vigor Head leaves the battlefield, each player gains 4 life and draws a card.

The General

Exile The General: Creatures you control get +1/+1 until end of turn. Untap them.

Disorienting Glower

Players can't cast spells until the Hydra's next turn.

Bloodhill Bastion

Whenever a creature enters, it gains double strike and haste until end of turn.
Whenever chaos ensues, exile target nontoken creature you control, then return it to the battlefield under your control.

UNIT Headquarters

When you planeswalk to UNIT Headquarters and at the beginning of your upkeep, create a tapped 1/1 white Soldier creature token.
Whenever chaos ensues, put a +1/+1 counter on each creature you control.

Hydra's Impenetrable Hide

Each Head gains indestructible until the end of the Hydra's next turn.

Norn's Dominion

When you planeswalk away from Norn's Dominion, destroy each nonland permanent without a fate counter on it, then remove all fate counters from all permanents.
Whenever chaos ensues, you may put a fate counter on target permanent.

I Know All, I See All

(An ongoing scheme remains face up until it's abandoned.)
Untap all permanents you control during each opponent's untap step.
At the beginning of each end step, if three or more cards were put into your graveyard this turn from anywhere, abandon this scheme.

Minamo

Whenever a player casts a spell, that player may draw a card.
Whenever chaos ensues, each player may return a blue card from their graveyard to their hand.

The Caldaia

Creature spells you cast from your hand have blitz {3}. (If you cast a spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)
Whenever chaos ensues, return target creature card from your graveyard to your hand.

Krosa

All creatures get +2/+2.
Whenever chaos ensues, you may add {W}{U}{B}{R}{G}.

Chromium

Flying
Rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)
At the beginning of your upkeep, sacrifice Chromium unless you pay {W}{U}{B}.

Celestine Reef

Creatures without flying or islandwalk can't attack.
Whenever chaos ensues, until a player planeswalks, you can't lose the game and your opponents can't win the game.

Valor's Reach

Whenever your team attacks with exactly two creatures, those creatures gain double strike until end of turn.
Whenever chaos ensues, untap up to two target creatures your team controls. If it's a main phase, there is an additional combat phase after this phase, followed by an additional main phase.

The Pyramid of Mars

When you planeswalk to The Pyramid of Mars and at the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Whenever chaos ensues, return target creature card from your graveyard to the battlefield.

The Harvester

Dance, Pathetic Marionette

When you set this scheme in motion, each opponent reveals cards from the top of their library until they reveal a creature card. Choose one of the revealed creature cards and put it onto the battlefield under your control. Put all other cards revealed this way into their owners' graveyards.

The Warrior

{T}: Target creature you control gains haste until end of turn.

Bounty: Paq, Fleeting Filcher

At the beginning of your end step, if there are four or more card types among cards in your graveyard, collect your reward.

Bounty: Paq, Fleeting Filcher // Wanted!

Impulsive Charge

At the beginning of combat this turn, all Revelers gain haste until end of turn and attack this combat if able.

The Fertile Lands of Saulvinia

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.
Whenever chaos ensues, reveal cards from the top of your planar deck until you reveal a plane card. Chaos ensues on that plane. Then put all cards revealed this way on the bottom of your planar deck in any order.

Orzhova

When you planeswalk away from Orzhova, each player returns all creature cards from their graveyard to the battlefield.
Whenever chaos ensues, for each opponent, exile up to one target creature card from that player's graveyard.

The Iron Guardian Stirs

When you set this scheme in motion, create a 4/6 colorless Golem artifact creature token.

Minotaur Younghorn

Haste
Minotaur Younghorn attacks each turn if able.

Fields of Summer

Whenever a player casts a spell, that player may gain 2 life.
Whenever chaos ensues, you may gain 10 life.

Orochi Colony

Whenever a creature you control deals combat damage to a player, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Whenever chaos ensues, target creature can't be blocked this turn.

Agyrem

Whenever a white creature dies, return it to the battlefield under its owner's control at the beginning of the next end step.
Whenever a nonwhite creature dies, return it to its owner's hand at the beginning of the next end step.
Whenever chaos ensues, creatures can't attack you until a player planeswalks.

Wild Maenads

First strike
Hero's Reward — When Wild Maenads leaves the battlefield, each player gains 3 life.

Naktamun

Each creature card in your graveyard has embalm. Its embalm cost is equal to its mana cost. (Exile a creature card from your graveyard and pay its embalm cost: Create a token that's a copy of it, except it's a white Zombie in addition to its other types with no mana cost. Embalm only as a sorcery.)
Whenever chaos ensues, you may discard a card. If you do, draw a card.

Karn

Each noncreature artifact you control is an artifact creature with power and toughness each equal to its mana value.

The Western Cloud

Prevent all damage that would be dealt to creatures and planeswalkers you control.
Whenever chaos ensues, create three tapped Treasure tokens. They each deal 1 damage to each creature and each planeswalker.

Sisay

Whenever you tap a land for mana, add one mana of any type that land produced.

Noxious Hydra Breath

Choose one — Noxious Hydra Breath deals 5 damage to each player; or destroy each tapped non-Head creature.

Behold the Power of Destruction

When you set this scheme in motion, destroy all nonland permanents target opponent controls.

My Genius Knows No Bounds

When you set this scheme in motion, you may pay {X}. If you do, you gain X life and draw X cards.

New New York

At the beginning of combat on your turn, until end of turn, noncreature artifacts you control become 3/3 Vehicles in addition to their other types and gain flying, haste, and crew 1.
Whenever chaos ensues, create a Treasure token and a 2/2 white Alien creature token.

Sea of Sand

Players reveal each card they draw.
Whenever a player draws a land card, that player gains 3 life.
Whenever a player draws a nonland card, that player loses 3 life.
Whenever chaos ensues, put target permanent on top of its owner's library.

Spear of the General

Equipped creature gets +2/+0 and has first strike.
Equip {2}

Maddened Oread

As long as five or more Revelers are on the battlefield, Maddened Oread attacks each turn if able.
Hero's Reward — When Maddened Oread leaves the battlefield, each player gains 3 life.

The Moonbase

Low Gravity — All creatures have "{2}: This creature gains flying until end of turn. Activate only as a sorcery."
Whenever chaos ensues, for each opponent, choose up to one target creature card in that player's graveyard. Put those cards onto the battlefield face down under your control. They're 2/2 Cyberman artifact creatures.

Horizon Boughs

All permanents untap during each player's untap step.
Whenever chaos ensues, you may search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle.

The Maelstrom

When you planeswalk to The Maelstrom and at the beginning of your upkeep, you may reveal the top card of your library. If it's a permanent card, you may put it onto the battlefield. If you revealed a card but didn't put it onto the battlefield, put it on the bottom of your library.
Whenever chaos ensues, return target permanent card from your graveyard to the battlefield.

Roots of All Evil

When you set this scheme in motion, create five 1/1 green Saproling creature tokens.

Stairs to Infinity

Players have no maximum hand size.
Whenever you roll the planar die, draw a card.
Whenever chaos ensues, reveal the top card of your planar deck. You may put it on the bottom of your planar deck.

The Pieces Are Coming Together

When you set this scheme in motion, draw two cards. Artifact spells you cast this turn cost {2} less to cast.

Unquenchable Fury

Each Minotaur can't be blocked this turn except by two or more creatures.

Kharasha Foothills

Whenever a creature you control attacks a player, for each other opponent, you may create a token that's a copy of that creature, tapped and attacking that opponent. Exile those tokens at the beginning of the next end step.
Whenever chaos ensues, you may sacrifice any number of creatures. If you do, Kharasha Foothills deals that much damage to target creature.

Fixed Point in Time

When you encounter Fixed Point in Time, until your next turn, if a player would planeswalk as a result of rolling the planar die, chaos ensues instead. (Then planeswalk away from this phenomenon.)

Windriddle Palaces

Players play with the top card of their libraries revealed.
You may play lands and cast spells from the top of any player's library.
Whenever chaos ensues, each player mills a card.

The Wilds

When you planeswalk to The Wilds and at the beginning of your upkeep, create a Food token.
Whenever chaos ensues, target player sacrifices a creature of their choice. If they do, you create a Food token. You create two Food tokens instead if the sacrificed creature's toughness was 4 or greater.

Reckless Minotaur

Haste
Reckless Minotaur attacks each turn if able.
At the beginning of the end step, destroy Reckless Minotaur.

Undercity Reaches

Whenever a creature deals combat damage to a player, its controller may draw a card.
Whenever chaos ensues, you have no maximum hand size for the rest of the game.

Nature Demands an Offering

When you set this scheme in motion, target opponent chooses a creature you don't control and puts it on top of its owner's library, then repeats this process for an artifact, an enchantment, and a land. Then the owner of each permanent chosen this way shuffles.

Strixhaven

Instant and sorcery spells players cast have demonstrate. (Whenever a player casts an instant or sorcery spell, they may copy it. If they do, they choose an opponent to also copy it. Players may choose new targets for their copies.)
Whenever chaos ensues, return up to one target instant or sorcery card from a graveyard to its owner's hand.

Ghirapur

At the beginning of combat on your turn, until end of turn, each noncreature, non-Vehicle artifact you control becomes a 5/3 Vehicle in addition to its other types and gains trample, haste, and crew 2.
Whenever chaos ensues, return target noncreature artifact card from your graveyard to your hand.

Dance of Panic

As long as five or more Revelers are on the battlefield, all Revelers have haste and attack each turn if able.

Dalek Intensive Care

When you planeswalk to Dalek Intensive Care and at the beginning of your upkeep, exile a non-Dalek creature you control. If you do, create a 3/3 black Dalek artifact creature token with menace. It gains haste until end of turn.
Whenever chaos ensues, target Dalek you control deals damage equal to its power to target creature you don't control.

Stronghold Furnace

If a source would deal damage to a permanent or player, it deals double that damage instead.
Whenever chaos ensues, Stronghold Furnace deals 1 damage to any target.

Sanctum of Serra

When you planeswalk away from Sanctum of Serra, destroy all nonland permanents.
Whenever chaos ensues, you may have your life total become 20.

Murasa

Whenever a nontoken creature enters, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
Whenever chaos ensues, target land becomes a 4/4 creature that's still a land.

Ravenous Brute Head

Hero's Reward — When Ravenous Brute Head leaves the battlefield, each player gains 2 life and draws a card.

Unified Lunge

Unified Lunge deals X damage to each player, where X is the number of Heads on the battlefield.

Esper

Artifact spells cost {1} less to cast.
Whenever chaos ensues, creatures you control that are white, blue, and/or black become artifacts in addition to their other types until end of turn. Then each artifact creature you control gains vigilance, menace, and lifelink until end of turn.

Eloren Wilds

Whenever a player taps a permanent for mana, that player adds one mana of any type that permanent produced.
Whenever chaos ensues, target player can't cast spells until a player planeswalks.

Bounty: Lord Fajjal

At the beginning of your end step, if a land card was put into your graveyard from anywhere this turn, collect your reward.

Bounty: Lord Fajjal // Wanted!

Izzet Steam Maze

Whenever a player casts an instant or sorcery spell, that player copies it. The player may choose new targets for the copy.
Whenever chaos ensues, instant and sorcery spells you cast this turn cost {3} less to cast.

Takenuma

Whenever a creature leaves the battlefield, its controller draws a card.
Whenever chaos ensues, return target creature you control to its owner's hand.

Choose Your Champion

When you set this scheme in motion, target opponent chooses a player. Until your next turn, only you and the chosen player can cast spells and attack with creatures.

Lethe Lake

At the beginning of your upkeep, mill ten cards.
Whenever chaos ensues, target player mills ten cards.

Gerrard

At the beginning of your draw step, draw an additional card.

Feeding Grounds

Red spells cost {1} less to cast.
Green spells cost {1} less to cast.
Whenever chaos ensues, put X +1/+1 counters on target creature, where X is that creature's mana value.

Ertai

Creatures you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Bounty: The Outsider

At the beginning of your end step, if you cast a spell from anywhere other than your hand this turn, collect your reward.

Bounty: The Outsider // Wanted!

Morphic Tide

When you encounter Morphic Tide, each player shuffles all permanents they own into their library, then reveals that many cards from the top of their library. Each player puts all artifact, creature, land, and planeswalker cards revealed this way onto the battlefield, then does the same for enchantment cards, then puts all cards revealed this way that weren't put onto the battlefield on the bottom of their library in any order. (Then planeswalk away from this phenomenon.)

Time Distortion

When you encounter Time Distortion, reverse the game's turn order. (For example, if play had proceeded clockwise around the table, it now goes counterclockwise. Then planeswalk away from this phenomenon.)

Rip to Pieces

At the beginning of combat this turn, each Reveler deals 1 damage to each player and each creature those players control.

Bounty: Gorra Tash and Silas

At the beginning of your end step, if all opponents were dealt combat damage this turn, collect your reward.

Bounty: Gorra Tash and Silas // Wanted!

Impulsive Return

Return two cards named Ecstatic Piper from Xenagos's graveyard to the battlefield. At the beginning of combat this turn, Impulsive Return deals damage to each player equal to the number of Revelers on the battlefield.

Onakke Catacomb

All creatures are black and have deathtouch.
Whenever chaos ensues, creatures you control get +1/+0 and gain first strike until end of turn.

Sokenzan

All creatures get +1/+1 and have haste.
Whenever chaos ensues, untap all creatures that attacked this turn. If it's a main phase, there is an additional combat phase after this phase, followed by an additional main phase.

Arcades Sabboth

Flying
At the beginning of your upkeep, sacrifice Arcades Sabboth unless you pay {G}{W}{U}.
Each untapped creature you control gets +0/+2 as long as it's not attacking.
{W}: Arcades Sabboth gets +0/+1 until end of turn.

Plundered Statue

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Plundered Statue is put into a graveyard from anywhere, each player draws a card.

The Vanquisher

Your starting hand size is increased by one.
Your maximum hand size is increased by one.

Touch of the Horned God

Whenever a Minotaur attacks this turn, it gains deathtouch until end of turn.