Each creature with mana value 2 or less gets +2/+2.

Whenever chaos ensues, create a 1/1 green Insect creature token with flying named Butterfly.

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.

Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell.

Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.

Whenever a creature attacks, it gets +1/+1 until end of turn for each other creature its controller controls that shares a creature type with it.

Whenever chaos ensues, turn target creature face down. It becomes a 2/2 Cyberman artifact creature.

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 enchantments 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.)

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.

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.

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

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.

Each creature card in your graveyard has embalm. Its embalm cost is equal to its mana cost.

Whenever chaos ensues, you may discard a card. If you do, draw a card.

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.

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.

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.

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.

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..

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.

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.

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.

All creatures are black and have deathtouch.

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

Song of the Ood — Noncreature spells have convoke.

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.

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.

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.

Instant and sorcery cards in graveyards have flashback. The flashback cost is equal to the card's mana cost.

Whenever chaos ensues, take an extra turn after this one.

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.

When you planeswalk to Panopticon, draw a card.
At the beginning of your draw step, draw an additional card.

Whenever chaos ensues, draw a card.

When you encounter Planewide Disaster, destroy all creatures. (Then planeswalk away from this phenomenon.)

When you planeswalk to Pompeii and at the beginning of your upkeep, put an eruption counter on it.
Whenever you roll a blank on the planar die, scry 2. Then put an eruption counter on Pompeii.

When chaos ensues, Pompeii deals damage to each creature and each player equal to the number of eruption counters on Pompeii. Each player sacrifices a land of their choice. Then planeswalk.

At the beginning of your end step, put the cards in your hand on the bottom of your library in any order, then draw that many cards.

Whenever chaos ensues, reveal the top three cards of your planar deck. Each of the revealed cards' chaos abilities triggers. Then put the revealed cards on the bottom of your planar deck in any order.

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.

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.