Yidris, Maelstrom Wielder costs {U}{B}{R}{G} and is a 5/4 Legendary Ogre Wizard with trample. Whenever Yidris deals combat damage to a player, the spells you cast from your hand this turn gain cascade. Each cascade casts a free spell, so the cheap spells in your hand all turn into free spells.

The precon already has the cascade spells and haste creatures, including Bloodbraid Elf, Bituminous Blast, Etherium-Horn Sorcerer, Whispersilk Cloak and Chaos Warp. Each swap below pairs a cut with an add, and every card is scored with the same numbers the Oracle uses to build decks: synergy and inclusion from the Yidris decks, plus lift, which shows how much more often a card turns up in Yidris decks than in decks that could play it.

Looking for the unmodified list first? Read the Entropic Uprising precon guide.

10
Swaps
$4.27
Cost of the adds
39→39
Lands
0→27
Avg Oracle score

What is holding the deck back

Not enough cascade creatures

Averna, the Chaos Bloom, Maelstrom Wanderer, Imoti, Celebrant of Bounty, Aurora Phoenix, Shardless Agent and Quandrix, the Proof all cascade or help cascade. They are among the top-scoring cards the precon leaves out.

Clunky sorceries outside the lists

Army of the Damned, Cruel Entertainment, Devastation Tide, Far Wanderings, Ghastly Conscription, Grave Upheaval, Parting Thoughts, Past in Flames and Spelltwine are not cards Yidris, and neither does Boompile decks usually play.

Too many sorceries

The deck has 20 sorceries but only 22 creatures, so there are few bodies to attack with and trigger Yidris.

The 10 swaps

Each pair shows the numbers for the card coming out and the card going in. Click a card image to zoom.

Swap 1 of 10
Boompile
Cut
Boompile
Artifact · 4
Not a card this commander's decks usually play, so it scores below the cards that are
Averna, the Chaos Bloom
Add
Averna, the Chaos Bloom
Legendary Creature — Elemental Shaman · GUR
Inclusion64%
Synergy28%
Lift1.8×
Oracle score 42

Boompile is a four-mana artifact that flips a coin to destroy all nonland permanents. It is not a card Yidris decks usually play.

Averna, the Chaos Bloom is a 4/2 Legendary Elemental Shaman for {G}{U}{R}. As you cascade, you may put a land card from among the exiled cards onto the battlefield tapped. A three-drop that turns a missed cascade into a land, and the highest-scoring card the precon leaves out.

Swap 2 of 10
Army of the Damned
Cut
Army of the Damned
Sorcery · 5BBB
Not a card this commander's decks usually play, so it scores below the cards that are
Maelstrom Wanderer
Add
Maelstrom Wanderer
Legendary Creature — Elemental · 5GUR
Inclusion60%
Synergy24%
Lift1.7×
Oracle score 38

Army of the Damned is an eight-mana sorcery that makes thirteen tapped Zombies. It is not a card Yidris decks usually play.

Maelstrom Wanderer is a 7/5 Legendary Elemental for {5}{G}{U}{R}. Creatures you control have haste, and it has cascade twice. An eight-drop that casts two free spells and gives Yidris haste.

Swap 3 of 10
Cruel Entertainment
Cut
Cruel Entertainment
Sorcery · 6B
Not a card this commander's decks usually play, so it scores below the cards that are
Imoti, Celebrant of Bounty
Add
Imoti, Celebrant of Bounty
Legendary Creature — Snake Druid · 3GU
Inclusion50%
Synergy21%
Lift1.7×
Oracle score 32

Cruel Entertainment is a seven-mana sorcery that swaps control of two players' turns. It is not a card Yidris decks usually play.

Imoti, Celebrant of Bounty is a 3/1 Legendary Snake Druid for {3}{G}{U} with cascade. Spells you cast with mana value 6 or greater have cascade. A five-drop that cascades and gives your expensive spells cascade.

Swap 4 of 10
Devastation Tide
Cut
Devastation Tide
Sorcery · 3UU
Not a card this commander's decks usually play, so it scores below the cards that are
Aurora Phoenix
Add
Aurora Phoenix
Creature — Phoenix · 4RR
Inclusion36%
Synergy16%
Lift1.8×
Oracle score 24

Devastation Tide is a five-mana sorcery that returns all nonland permanents to their owners' hands. It is not a card Yidris decks usually play.

Aurora Phoenix is a 5/3 flying Phoenix for {4}{R}{R} with cascade. Whenever you cast a spell with cascade, you return it from your graveyard to your hand. A six-drop that cascades and comes back every time you cast a cascade spell.

Swap 5 of 10
Far Wanderings
Cut
Far Wanderings
Sorcery · 2G
Not a card this commander's decks usually play, so it scores below the cards that are
Farseek
Add
Farseek
Sorcery · 1G
Inclusion56%
Synergy8%
Lift1.2×
Oracle score 27

Far Wanderings is a three-mana sorcery that puts a basic land onto the battlefield tapped. It is not a card Yidris decks usually play.

Farseek costs {1}{G}. It searches your library for a Plains, Island, Swamp or Mountain card and puts it onto the battlefield tapped. A two-mana ramp spell that fetches three of Yidris's colours.

Swap 6 of 10
Ghastly Conscription
Cut
Ghastly Conscription
Sorcery · 5BB
Not a card this commander's decks usually play, so it scores below the cards that are
Etali, Primal Storm
Add
Etali, Primal Storm
Legendary Creature — Elder Dinosaur · 4RR
Inclusion36%
Synergy14%
Lift1.7×
Oracle score 23

Ghastly Conscription is a seven-mana sorcery that manifests a graveyard's creature cards. It is not a card Yidris decks usually play.

Etali, Primal Storm is a 6/6 Legendary Elder Dinosaur for {4}{R}{R}. Whenever it attacks, you exile the top card of each player's library and may cast any number of spells from among those cards without paying their mana costs. A six-drop that casts free spells each attack.

Swap 7 of 10
Grave Upheaval
Cut
Grave Upheaval
Sorcery · 4BR
Not a card this commander's decks usually play, so it scores below the cards that are
Shardless Agent
Add
Shardless Agent
Artifact Creature — Human Rogue · 1GU
Inclusion34%
Synergy15%
Lift1.8×
Oracle score 23

Grave Upheaval is a six-mana sorcery that reanimates a creature from any graveyard, and it has basic landcycling {2}. It is not a card Yidris decks usually play.

Shardless Agent is a 2/2 Human Rogue artifact creature for {1}{G}{U} with cascade. A three-drop that casts a free spell on its own.

Swap 8 of 10
Parting Thoughts
Cut
Parting Thoughts
Sorcery · 2B
Not a card this commander's decks usually play, so it scores below the cards that are
Quandrix, the Proof
Add
Quandrix, the Proof
Legendary Creature — Elder Dragon · 4GU
Inclusion30%
Synergy11%
Lift1.6×
Oracle score 19

Parting Thoughts is a three-mana sorcery that destroys a creature and draws for its counters. It is not a card Yidris decks usually play.

Quandrix, the Proof is a 6/6 flying, trample Legendary Elder Dragon for {4}{G}{U} with cascade. Instant and sorcery spells you cast from your hand have cascade. A six-drop that cascades and gives your spells cascade without needing combat damage.

Swap 9 of 10
Past in Flames
Cut
Past in Flames
Sorcery · 3R
Not a card this commander's decks usually play, so it scores below the cards that are
Cultivate
Add
Cultivate
Sorcery · 2G
Inclusion45%
Synergy7%
Lift1.2×
Oracle score 22

Past in Flames is a four-mana sorcery that gives flashback to the instants and sorceries in your graveyard. It is not a card Yidris decks usually play.

Cultivate costs {2}{G}. It puts a basic land onto the battlefield tapped and another basic land into your hand. A three-mana ramp spell that also fixes colours.

Swap 10 of 10
Spelltwine
Cut
Spelltwine
Sorcery · 5U
Not a card this commander's decks usually play, so it scores below the cards that are
Ancestral Vision
Add
Ancestral Vision
Sorcery
Inclusion37%
Synergy16%
Lift1.8×
Oracle score 24

Spelltwine is a six-mana sorcery that copies an instant or sorcery from your graveyard and one from an opponent's. It is not a card Yidris decks usually play.

Ancestral Vision has suspend 4 for {U}. Target player draws three cards when the last time counter is removed. A one-mana spell that draws three cards in four turns.

The full swap list

Cut

  • Boompile
  • Army of the Damned
  • Cruel Entertainment
  • Devastation Tide
  • Far Wanderings
  • Ghastly Conscription
  • Grave Upheaval
  • Parting Thoughts
  • Past in Flames
  • Spelltwine

Add

  • Averna, the Chaos Bloom
  • Maelstrom Wanderer
  • Imoti, Celebrant of Bounty
  • Aurora Phoenix
  • Farseek
  • Etali, Primal Storm
  • Shardless Agent
  • Quandrix, the Proof
  • Cultivate
  • Ancestral Vision

What to keep

These cards are doing the deck's heavy lifting. Do not cut them.

If you want to spend more

These are strong but sit outside a budget upgrade. Prices are the cheapest paper printing.

The verdict

Entropic Uprising already has the cascade spells, the haste creatures and Yidris's trigger. The upgrade is cheap cascade creatures that give the deck more free spells, in place of clunky sorceries that Yidris decks leave out. These ten swaps cost about $4 in total.

Want a full 100-card list built around Yidris, Maelstrom Wielder from today's data?

Build with The Oracle →

Frequently asked questions

What are the best upgrades for the Entropic Uprising precon?

Using data from 10,376 Yidris decks, the highest-scoring additions are Averna, the Chaos Bloom (for Boompile), Maelstrom Wanderer (for Army of the Damned) and Imoti, Celebrant of Bounty (for Cruel Entertainment). The full list has 10 swaps, each scored with synergy, inclusion and lift.

How much does it cost to upgrade Entropic Uprising?

All 10 swaps cost about $4.27 at the cheapest paper printings (TCGplayer market prices via Scryfall, 2026-10-28). If you want to spend more, the guide also covers Keeper of Secrets ($7.47) and Apex Devastator ($7.48).

What should I cut from Entropic Uprising?

The weakest cards for this commander are Boompile, Army of the Damned and Cruel Entertainment. The guide explains the reason for every cut, and swaps each one for a card that scores higher.

Which cards should I keep in Entropic Uprising?

Keep Sol Ring, Chromatic Lantern, Whispersilk Cloak, Bloodbraid Elf and Chaos Warp. These are the cards doing the deck's heavy lifting.

What does Yidris do?

Yidris, Maelstrom Wielder costs {U}{B}{R}{G} and is a 5/4 Legendary Ogre Wizard with trample. Whenever Yidris deals combat damage to a player, the spells you cast from your hand this turn gain cascade. Each cascade casts a free spell, so the cheap spells in your hand all turn into free spells.

More Commander 2016 upgrade guides

All precon upgrade guides

How the numbers work

Inclusion is the share of Yidris, Maelstrom Wielder decks (10,376 of them when this was written, 2026-10-28) that play the card. Synergy is how much more often they play it than other decks in the same colours. Oracle score is synergy × 0.6 plus inclusion × 0.4, the same blend The Oracle uses to rank cards for a deck. Lift compares how often the card appears in these decks with how often it could, capped at 8× here; it is shown for context and does not change the score.

Two cautions. Players who run the precon unmodified count as Yidris decks, which flatters every card the precon contains. Lift stays low for these cards because most of them are played in many decks, so use inclusion and synergy to compare cards, not lift. A card the commander's decks do not usually play counts as 0 in the average score. Prices are the cheapest non-foil paper printing on TCGplayer (via Scryfall), in USD, and move daily.