Talon Gates

Any time you could cast a sorcery, you may exile a nonland card from your hand with X time counters on it, where X is its mana value. If the exiled card doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, the player may cast it without paying its mana cost. If it's a creature, it has haste.)
Whenever chaos ensues, remove two time counters from each suspended card you own.

City of the Daleks

Whenever you attack, target opponent loses X life, where X is the number of artifacts you control.
Whenever chaos ensues, for each opponent, you create a 3/3 black Dalek artifact creature token with menace that attacks that opponent this turn if able. Those tokens gain haste. Sacrifice them at the beginning of the next end step.

Kilnspire District

When you planeswalk to Kilnspire District and at the beginning of your first main phase, put a charge counter on Kilnspire District, then add {R} for each charge counter on it.
Whenever chaos ensues, you may pay {X}. If you do, Kilnspire District deals X damage to any target.

The Cheetah Planet

When you planeswalk to The Cheetah Planet and at the beginning of your upkeep, put two +1/+1 counters on target non-Cat creature you control. It becomes a Cat in addition to its other types.
Whenever chaos ensues, all Cats gain provoke until end of turn. (Whenever a Cat attacks, its controller may have target creature defending player controls untap and block it if able.)

The Pyramid of Mars

When you planeswalk to The Pyramid of Mars and at 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.

Amy's Home

When you planeswalk to Amy's Home and at the beginning of your upkeep, you may exile a nonland card from your hand with a number of time counters on it equal to its mana value. If it doesn't have suspend, it gains suspend.
Whenever chaos ensues, time travel. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter.)

The Zephyr Maze

Creatures with flying get +2/+0.
Creatures without flying get -2/-0.
Whenever chaos ensues, target creature gains flying until end of turn.

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.

Naya

You may play any number of lands on each of your turns.
Whenever chaos ensues, target red, green, or white creature you control gets +1/+1 until end of turn for each land you control.

Unyaro

At the beginning of your end step, if you planeswalked to Unyaro this turn, untap all creatures. They phase out until a player planeswalks. (Treat them and anything attached to them as though they didn't exist.)
Whenever chaos ensues, create two 2/2 white and blue Knight creature tokens with vigilance.

Immersturm

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.
Whenever chaos ensues, exile target creature, then return it to the battlefield under its owner's control.

Bowie Base One

At the beginning of your end step, goad target creature controlled by the player to your left. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)
Whenever chaos ensues, target creature gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.)

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.

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.

Ten Wizards Mountain

Whenever you roll the planar die, put a +1/+1 counter on up to one target creature.
Whenever chaos ensues, creatures you control gain flying until end of turn.

Edge of Malacol

If a creature you control would untap during your untap step, put two +1/+1 counters on it instead.
Whenever chaos ensues, untap each creature you control.

Nephalia

At the beginning of your end step, mill seven cards. Then return a card at random from your graveyard to your hand.
Whenever chaos ensues, return target card from your graveyard to your hand.

The Doctor's Childhood Barn

Creatures enter tapped.
Whenever chaos ensues, for each opponent, choose up to one target nonland permanent that opponent controls. Untap those permanents. They phase out. They can't phase in for as long as The Doctor's Childhood Barn remains face up. When a player planeswalks, those permanents phase in.

Trail of the Mage-Rings

Instant and sorcery spells have rebound. (The spell's controller exiles the spell as it resolves if they cast it from their hand. At the beginning of that player's next upkeep, they may cast that card from exile without paying its mana cost.)
Whenever chaos ensues, you may search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.

Glen Elendra

At end of combat, you may exchange control of target creature you control that dealt combat damage to a player this combat and target creature that player controls.
Whenever chaos ensues, gain control of target creature you own.

Skybreen

Players play with the top card of their libraries revealed.
Spells that share a card type with the top card of a library can't be cast.
Whenever chaos ensues, target player loses life equal to the number of cards in their hand.

New Argive

Whenever a historic creature you control attacks, it gets +2/+2 until end of turn. (Artifacts, legendaries, and Sagas are historic.)
Whenever chaos ensues, reveal cards from the top of your library until you reveal a historic card. Put that card into your hand and the rest on the bottom of your library in a random order.

Paliano

When one or more creatures you control deal combat damage to a player, if there is no monarch, you become the monarch.
Whenever chaos ensues, create a 1/1 black Assassin creature token with deathtouch and haste.

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.

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.

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.

Norn's Seedcore

When you planeswalk to Norn's Seedcore, chaos ensues.
Whenever chaos ensues, reveal cards from the top of your planar deck until you reveal a plane card. Planeswalk to it, except don't planeswalk away from any plane. Put the rest of the revealed cards on the bottom of your planar deck in any order.

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.

Turri Island

Creature spells cost {2} less to cast.
Whenever chaos ensues, reveal the top three cards of your library. Put all creature cards revealed this way into your hand and the rest into your graveyard.

The Dining Car

When you planeswalk to The Dining Car, each player creates a Food token.
Sixty-Six Seconds — At the beginning of your upkeep, sacrifice a creature with the least toughness among creatures you control. Then investigate.
Whenever chaos ensues, activated abilities of artifact tokens you control cost {2} less to activate this turn.

Tazeem

Creatures can't block.
Whenever chaos ensues, draw a card for each land you control.

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.

Jund

Whenever a player casts a creature spell that's black, red, or green, it gains devour 5. (As the creature enters, its controller may sacrifice any number of creatures of their choice. The creature enters with five times that many +1/+1 counters on it.)
Whenever chaos ensues, create two 1/1 red Goblin creature tokens.

Besieged Viking Village

All creatures have "Boast — {1}: Put a +1/+1 counter on this creature." (Activate only if that creature attacked this turn and only once each turn.)
Whenever chaos ensues, put an indestructible counter on target creature you control that attacked this 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.

Gavony

All creatures have vigilance.
Whenever chaos ensues, creatures you control gain indestructible until end of 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.

Bant

All creatures have exalted. (Whenever a creature attacks alone, it gets +1/+1 until end of turn for each instance of exalted among permanents its controller controls.)
Whenever chaos ensues, put a divinity counter on target green, white, or blue creature. That creature has indestructible for as long as it has a divinity counter on it.

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.

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.

Aretopolis

When you planeswalk to Aretopolis and at the beginning of your upkeep, put a scroll counter on Aretopolis, then you gain life equal to the number of scroll counters on it.
When Aretopolis has ten or more scroll counters on it, planeswalk.
Whenever chaos ensues, put a scroll counter on Aretopolis, then draw cards equal to the number of scroll counters on it.

The Matrix of Time

When you planeswalk to The Matrix of Time, each player exiles the top card of their library.
During your turn, you may play lands and cast spells from among cards exiled with The Matrix of Time.
Whenever you play a land or cast a spell from among cards exiled with The Matrix of Time, that card's owner loses 3 life and exiles the top card of their library.
Whenever chaos ensues, create two Treasure 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.

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.

Lethe Lake

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

Furnace Layer

When you planeswalk to Furnace Layer and at the beginning of your upkeep, select target player at random. That player discards a card. If that player discards a land card this way, they lose 3 life.
Whenever chaos ensues, you may destroy target nonland permanent.

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.

Goldmeadow

Whenever a land enters, that land's controller creates three 0/1 white Goat creature tokens.
Whenever chaos ensues, create a 0/1 white Goat creature token.

Hotel of Fears

At the beginning of your upkeep, exile the top card of your library. You lose life equal to its mana value. You may play that card this turn.
Praise Him — Whenever chaos ensues, choose a color. Put X +1/+1 counters on target creature you control, where X is your devotion to that color. Then sacrifice another creature. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

Astral Arena

No more than one creature can attack each combat.
No more than one creature can block each combat.
Whenever chaos ensues, Astral Arena deals 2 damage to each creature.

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.

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.

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.

Llanowar

All creatures have "{T}: Add {G}{G}."
Whenever chaos ensues, untap all creatures you control.

North Pole Research Base

At the beginning of your upkeep, target opponent draws a card and creates a Treasure token.
Whenever chaos ensues, create a 2/2 white Alien creature token. When you do, tap target nontoken creature an opponent controls. Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Gardens of Tranquil Repose

Suspended Animation — Whenever a creature dies, exile it. Its controller scries 1.
Whenever chaos ensues, create X 3/3 black Dalek artifact creature tokens with menace, where X is one plus the number of cards exiled with Gardens of Tranquil Repose.

Kerblam! Warehouse

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token.
Whenever chaos ensues, until your next turn, noncreature artifacts you control gain "{T}, Sacrifice this artifact: Flip a coin. If you win the flip, this artifact deals 3 damage to any target."

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.

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.

Towashi

Modified creatures you control have trample and "Whenever this creature deals combat damage to a player or planeswalker, draw a card." (Equipment, Auras you control, and counters are modifications.)
Whenever chaos ensues, distribute three +1/+1 counters among one, two, or three target creatures you control.

Ood Sphere

Song of the Ood — Noncreature spells have convoke. (A player's creatures can help cast those spells. Each creature they tap while casting a noncreature spell pays for {1} or one mana of that creature's color.)
Red-Eye — Whenever chaos ensues, for each opponent, goad up to one target creature that opponent controls. Until your next turn, those creatures can't become tapped unless they're being declared as attackers.

Stensia

Whenever a creature deals damage to one or more players for the first time each turn, put a +1/+1 counter on it.
Whenever chaos ensues, each creature you control gains "{T}: This creature deals 1 damage to target player or planeswalker" until end of turn.

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.

Stormcage Containment Facility

Each creature card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)
Whenever chaos ensues, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Grove of the Dreampods

When you planeswalk to Grove of the Dreampods and at the beginning of your upkeep, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.
Whenever chaos ensues, return target creature card from your graveyard to the battlefield.

Grand Ossuary

Whenever a creature dies, its controller distributes a number of +1/+1 counters equal to its power among any number of target creatures they control.
Whenever chaos ensues, each player exiles all creatures they control and creates X 1/1 green Saproling creature tokens, where X is the total power of the creatures they exiled this way. Then planeswalk.

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.

Lair of the Ashen Idol

At the beginning of your upkeep, sacrifice a creature. If you can't, planeswalk.
Whenever chaos ensues, any number of target players each create a 2/2 black Zombie creature token.

Prahv

If you cast a spell this turn, you can't attack with creatures.
If you attacked with creatures this turn, you can't cast spells.
Whenever chaos ensues, you gain life equal to the number of cards in your hand.

Littjara

When you planeswalk to Littjara and at the beginning of your upkeep, create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)
Whenever chaos ensues, choose a creature type. Put a +1/+1 counter on each creature you control of that type.

Spectrox Mines

When you planeswalk to Spectrox Mines and at the beginning of your upkeep, you lose 3 life and create a Treasure token.
Whenever chaos ensues, create a Food token and a 2/2 black Human Rogue creature token.

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.

Fields of Summer

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

Lake Silencio

Still Point in Time — All spells have split second. (As long as a spell with split second is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Whenever chaos ensues, Lake Silencio deals 6 damage to target creature an opponent controls. If a creature dealt damage this way would die this turn, exile it instead.

Naar Isle

At the beginning of your upkeep, put a flame counter on Naar Isle, then Naar Isle deals damage to you equal to the number of flame counters on it.
Whenever chaos ensues, Naar Isle deals 3 damage to target player or planeswalker.

Otaria

Instant and sorcery cards in graveyards have flashback. The flashback cost is equal to the card's mana cost. (Its owner may cast the card from their graveyard for its mana cost. Then they exile it.)
Whenever chaos ensues, take an extra turn after this one.

Isle of Vesuva

Whenever a nontoken creature enters, its controller creates a token that's a copy of that creature.
Whenever chaos ensues, destroy target creature and all other creatures with the same name as that creature.

Quicksilver Sea

When you planeswalk to Quicksilver Sea and at the beginning of your upkeep, scry 4. (Look at the top four cards of your library, then put any number of them on the bottom and the rest on top in any order.)
Whenever chaos ensues, reveal the top card of your library. You may play it without paying its mana cost.

Mount Keralia

At the beginning of your end step, put a pressure counter on Mount Keralia.
When you planeswalk away from Mount Keralia, it deals damage equal to the number of pressure counters on it to each creature and each planeswalker.
Whenever chaos ensues, prevent all damage that planes named Mount Keralia would deal this game to permanents you control.

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.

Selesnya Loft Gardens

If an effect would create one or more tokens, it creates twice that many of those tokens instead.
If an effect would put one or more counters on a permanent, it puts twice that many of those counters on that permanent instead.
Whenever chaos ensues, until end of turn, whenever you tap a land for mana, add one mana of any type that land produced.

Riptide Island

When you planeswalk to Riptide Island and at the beginning of your upkeep, create two 1/1 colorless Sliver creature tokens.
Whenever chaos ensues, Slivers you control gain haste and get +X/+X until end of turn, where X is the number of Slivers you control.

Velis Vel

Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Elemental Shamans and an Elemental Spirit are on the battlefield, each gets +2/+2.)
Whenever chaos ensues, target creature gains all creature types until end of turn.

Hedron Fields of Agadeem

Creatures with power 7 or greater can't attack or block.
Whenever chaos ensues, create a 7/7 colorless Eldrazi creature token with annihilator 1. (Whenever it attacks, defending player sacrifices a permanent of their choice.)

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.

The Fourth Sphere

At the beginning of your upkeep, sacrifice a nonblack creature.
Whenever chaos ensues, create a 2/2 black Zombie creature token.

Temple of Atropos

At the beginning of each of your postcombat main phases, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)
When chaos ensues, reverse the game's turn order. Then planeswalk. (For example, if play had proceeded clockwise around the table, it now goes counterclockwise.)

Aplan Mortarium

Byzantium Radiation — At the beginning of your upkeep, put an exposure counter on Aplan Mortarium. Then you lose life equal to the number of exposure counters on it.
Whenever chaos ensues, create two 2/2 black Alien Angel artifact creature tokens with first strike, vigilance, and "Whenever an opponent casts a creature spell, this permanent isn't a creature until end of turn."

Two Streams Facility

Whenever you planeswalk to Two Streams Facility and at the beginning of the first upkeep of the game, each player chooses green anchor or red waterfall.
Each player who last chose green anchor may play an additional land during each of their turns.
Creatures controlled by players who last chose red waterfall get +2/+0 and have haste.
Whenever chaos ensues, each player who last chose green anchor chooses red waterfall, and vice versa.

Akoum

Players may cast enchantment spells as though they had flash.
Whenever chaos ensues, destroy target creature that isn't enchanted.

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.

Bad Wolf Bay

At the beginning of combat on your turn, exile up to one target creature. Return it to the battlefield under its owner's control at the beginning of the next end step.
When chaos ensues, cards can't enter from exile this turn. Then planeswalk.

The Aether Flues

When you planeswalk to The Aether Flues and at the beginning of your upkeep, you may sacrifice a creature. If you do, reveal cards from the top of your library until you reveal a creature card, put that card onto the battlefield, then shuffle all other cards revealed this way into your library.
Whenever chaos ensues, you may put a creature card from your hand onto the battlefield.

Nontoken creatures are enchantments in addition to their other types.
Constellation — Whenever an enchantment you control enters, you gain 1 life.
Whenever chaos ensues, choose a color. Add an amount of mana of that color equal to your devotion to that color.

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.

Ketria

When you planeswalk to Ketria and at the beginning of your upkeep, put your choice of a vigilance, menace, or trample counter on target creature you control.
Whenever chaos ensues, exile cards from the top of your library until you exile a nonland permanent card. Put that card onto the battlefield or into your hand.

Enigma Ridges

When you planeswalk to Enigma Ridges, each player who controls fewer lands than the player who controls the most lands searches their library for a number of basic land cards less than or equal to the difference, reveals them, puts them into their hand, then shuffles.
Whenever chaos ensues, draw a card, then you may put a land card from your hand onto the battlefield.

The Eon Fog

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

Raven's Run

All creatures have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever chaos ensues, put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

Prime Minister's Cabinet Room

At the beginning of combat on your turn, up to one target creature you control becomes a copy of target creature an opponent controls.
Will of the council — Whenever chaos ensues, starting with you, each player votes for a creature you don't control. Exile each creature with the most votes or tied for most votes.

The Lux Foundation Library

Players have no maximum hand size.
Whenever a creature you control deals combat damage to a player, you may draw a card.
Whenever chaos ensues, put a shadow counter on target creature. (A creature with shadow can block or be blocked by only creatures with shadow.)