Flying, crew 2

Creature spells you cast from your hand have blitz .

Whenever chaos ensues, return target creature card from your graveyard to your hand.

Those Who Came Before — This spell costs less to cast for each historic card in your graveyard.
Exile any number of historic cards from your graveyard with total mana value 30 or greater: You get an emblem with "Creatures you control have base power and toughness 9/9."

Each creature card in your graveyard has scavenge. The scavenge cost is equal to its mana cost.

Whenever chaos ensues, create two 1/1 white Warrior creature tokens.

If it's neither day nor night, it becomes day as The Celestus enters.
: Add one mana of any color.
, : If it's night, it becomes day. Otherwise, it becomes night. Activate only as a sorcery.
Whenever day becomes night or night becomes day, you gain 1 life. You may draw a card. If you do, discard a card.

At the beginning of your end step, if you didn't activate a loyalty ability of a planeswalker this turn, you lose 2 life.
, : For each planeswalker you control, you may activate one of its loyalty abilities once this turn as though none of its loyalty abilities have been activated this turn.

, , Exile The Champion : Search your library for a legendary artifact card that isn't a creature card, reveal it, put it onto the battlefield, then shuffle.

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.

(Transforms from Matzalantli.)
Fathomless descent — : Add X mana of any one color, where X is the number of permanent cards in your graveyard.

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.

This spell costs less to cast for each instant and sorcery card in your graveyard.
Reach
Whenever The Dawning Archaic attacks, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

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.

, : Roll a d20 and subtract the number of cards in your hand. If the result is 0 or less, discard your hand.
1-9 | Return a card at random from your graveyard to your hand.
10-19 | Draw two cards.
20 | Put a creature card from any graveyard onto the battlefield under your control. When that creature dies, its owner loses the game.

Spells you cast that target a creature you control cost less to cast.

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 less to activate this turn.

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.

If a creature would die, instead exile it and that creature's controller loses 2 life.

Whenever chaos ensues, redistribute any number of players' life totals. (Each of those players gets one life total back.)

Equipped creature gets +1/+1 and has "5, Exile The Dominion Bracelet: You control target opponent during their next turn. This ability costs less to activate, where X is this creature's power. Activate only as a sorcery." (You see all cards that player could see and make all decisions for them.)
Equip

This land enters tapped.
: Add .
, , Sacrifice this land: Draw a card.

Whenever you roll the planar die, creatures you control get +1/+1 and gain haste until end of turn.

Whenever chaos ensues, end the turn. (Exile all spells and abilities from the stack. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn " and "until end of turn" effects end.)

When The Echoverse Fulcrum enters, draw a card, then discard a card.
, , Exile The Echoverse Fulcrum: Destroy all creatures. Activate only as a sorcery.

Whenever you play a land or cast a spell, draw a card.
At the beginning of your end step, your life total becomes half your starting life total, rounded up.