First Sliver Turbo Cascade - "The Deck My Meta Only Lets Me Play Once a Year"

[Mookie]

tl;dr: cast The First Sliver, then flip the rest of the deck onto the table.

I brewed Averna cascade a while ago, but a bunch of new cascade and cascade-like cards have been printed in the last few years. Unexpected Results and Tibalt's Trickery are two cards that you can hit at the end of a cascade chain and restart with a more expensive spell. Meanwhile, cards like Apex Devastator and Brilliant Ultimatum let you cast multiple spells and grow the stack further.

Notably, this deck can not play any non-cascade cards with mana value four or less, to guarantee that Unexpected Results or Tibalt's Trickery will always be hit. The one exception is a single Buried Alive (fetching Kozilek, Butcher of Truth or Ulamog, the Infinite Gyre) to shuffle those cards back into the deck.

Is this deck good? Probably not. Will your opponents ask you turn burn it after your an hour-long turn? Seems plausible.

Turbo Cascade

DecklistCMCManaPricesChartsDraw 7

Commander

1 The First Sliver

Cascaaaaade

1 Ardent Plea

1 Demonic Dread

1 Shardless Agent

1 Violent Outburst

1 Bloodbraid Elf

1 Captured Sunlight

1 Kathari Remnant

1 Stormcaller's Boon

1 Throes of Chaos

1 Bituminous Blast

1 Deny Reality

1 Garbage Elemental|47037

1 Heralds of Tzeentch

1 Imoti, Celebrant of Bounty

1 Noise Marine

1 Volcanic Torrent

1 Aurora Phoenix

1 Boarding Party

1 Enlisted Wurm

1 Etherium-Horn Sorcerer

1 Let the Galaxy Burn

1 Meteoric Mace

1 Sakashima's Protege

1 Sweet-Gum Recluse

1 Annoyed Altisaur

1 Enigma Sphinx

1 Ingenuity Engine

1 Maelstrom Colossus

1 Maelstrom Wanderer

1 Ethersworn Sphinx

1 Call Forth the Tempest

1 Apex Devastator

Free Spells

1 Tibalt's Trickery

1 Unexpected Results

1 Creative Technique

1 Invasion of Alara

1 Hazoret's Undying Fury

1 Mind's Desire

1 Rishkar's Expertise

1 Spelljack

1 Brilliant Ultimatum

1 Emergent Ultimatum

1 Etali, Primal Conqueror

1 Aminatou's Augury

1 One with the Multiverse

1 Omniscience

Shuffling

1 Buried Alive

1 Ulamog, the Infinite Gyre

1 Kozilek, Butcher of Truth

Ramp

1 Greater Tanuki

1 Shefet Monitor

1 Spring // Mind

1 Reshape the Earth

1 Avatar of Growth

1 Beanstalk Giant

1 Hour of Promise

1 Slimefoot's Survey

1 Verdant Mastery

1 Magma Opus

1 Nexus of Fate

Misc

1 Arcane Adaptation

Lands

1 Plains

1 Island

1 Swamp

1 Mountain

2 Forest

1 Command Tower

1 Exotic Orchard

1 Forbidden Orchard

1 Mana Confluence

1 City of Brass

1 Cascading Cataracts

1 The World Tree

1 Misty Rainforest

1 Marsh Flats

1 Verdant Catacombs

1 Polluted Delta

1 Scalding Tarn

1 Watery Grave

1 Arid Mesa

1 Flooded Strand

1 Windswept Heath

1 Bloodstained Mire

1 Wooded Foothills

1 Overgrown Tomb

1 Godless Shrine

1 Hallowed Fountain

1 Breeding Pool

1 Blood Crypt

1 Stomping Ground

1 Steam Vents

1 Temple Garden

1 Sacred Foundry

1 Zagoth Triome

1 Savai Triome

1 Ketria Triome

1 Indatha Triome

1 Raugrin Triome

Approximate Total Cost:

SPOILER

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Also: I am legally required to point out what day this deck was posted on.

[Mookie]

Proxied this in paper and did a few goldfish games.

G1: T5 Kozilek, Butcher of Truth, but not much in the following turns.
G2: T4 The First Sliver → Avatar of Growth, T5 Maelstrom Wanderer → 9 other spells, T6 One with the Multiverse → Apex Devastator → Nexus of Fate.

So yeah, on a scale from 'fair and balanced' to 'as Richard Garfield intended', I would rate this a 7.

edit: as an update, I was able get in three games with this deck.
G1: I whiffed on a Kathari Remnant on T4 (hit Buried Alive), but T5 I cascaded into Tibalt's Trickery and hit Emergent Ultimatum for the win (fetching Omniscience, Mind's Desire, and Apex Altisaur).
G2: I ramped into T4 The First Sliver and was in a position to win... if not for my opponent's The Beamtown Bullies → Inverter of Truth. I'm blaming that game on play vs draw luck.
G3: Cascaded The First Sliver into Tibalt's Trickery and hit Mind's Desire. I didn't technically hit anything that was going to win the game, but my opponents conceded with four more cascade triggers on the stack or in exile and Arcane Adaptation on the battlefield, so... after the hour so it would take to resolve the stack, I assume I would win, but it's hard to say for sure.

One person I spoke to mentioned Wheel of Sun and Moon as a potential inclusion - it would remove the requirement for Buried Alive as a way to shuffle Tibalt's Trickery back into the deck, which would in turn make the deck significantly more consistent. Unfortunately, it would also add a 50% fail rate for the situation where Trickery is cast before Wheel is out and can't be shuffled in... plus the cascade chain would require a second spell to be cast the following turn after getting Wheel out. It probably would be a net downgrade, but worth consideration.

...anyway, I've taken the deck apart for now, but I might pull it out again next year.

[Mookie]

Apparently this is an actual Legacy deck now called 'Mississippi River' // Creative Technique. I'll note that it is using Saprazzan Skerry and other fast mana lands to ramp into Creative Technique / Throes of Chaos → Tibalt's Trickery on turn 3/2, which I had in the Averna, the Chaos Bloom build but dropped in this 5C version.

...I don't necessarily think it's a good Legacy deck, but it is fun to see in action.