All creatures have ": Add ."
Whenever chaos ensues, untap all creatures you control.

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.

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.

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.

Whenever a nonblack card is put into a player's graveyard from anywhere, that player loses 1 life.
Whenever chaos ensues, each opponent discards a card.

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.

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

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.

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

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.

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

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

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 encounter Reality Shaping, starting with you, each player may put a permanent card from their hand onto the battlefield. (Then planeswalk away from this phenomenon.)

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.

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.

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.

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

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

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.

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.

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.

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

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.

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.

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

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

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

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

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.

Prevent all combat damage that would be dealt by non-Werewolf creatures.
Whenever chaos ensues, each creature you control gets +2/+2, gains trample, and becomes a Werewolf in addition to its other types until end of turn.

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 ": This creature deals 1 damage to target player or planeswalker" until end of turn.

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.)

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.

Whenever a player casts an instant or sorcery spell with a single target, that player copies that spell for each other spell, permanent, card not on the battlefield, and/or player the spell could target. Each copy targets a different one of them.
Whenever chaos ensues, choose target creature. Each player except that creature's controller creates a token that's a copy of that creature.

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.