Commander 2021 · 2021 Commander precon
Quantum Quandrix upgrade guide
Budget upgrades, cuts and the full decklist for Adrix and Nev, Twincasters.
Quantum Quandrix is a Simic (blue-green) Commander precon from Commander 2021 (2021), led by Adrix and Nev, Twincasters. Out of the box it runs 40 lands, 10 ramp pieces, 11 card-draw effects, 7 removal spells and 2 board wipes, with an average mana value of 3.86.
Measured against a typical Commander build, it's lightest on board wipes and removal, and 11 of its lands enter tapped. Its game plan leans on tokens, +1/+1 counters and spellslinger, so the plan below favors cards that push that. The $50 plan below makes 10 swaps for $23.02.
Deck health
$50 budget plan
Best upgrades for Quantum Quandrix
10 swaps for $23.02, built around tokens and +1/+1 counters and spellslinger. Prices as of November 6, 2026.
Add 10
Protection: deck has 0 of ~2 · #12 on EDHREC$1.89
Protection: deck has 0 of ~2 · #27 on EDHREC$9.94
Board wipes: deck has 2 of ~3 · #286 on EDHREC$0.35
Removal: deck has 7 of ~8 · #16 on EDHREC$2.18
Fits your Tokens plan · #704 on EDHREC$0.36
Fits your +1/+1 counters plan · #281 on EDHREC$0.34
Fits your Spellslinger plan · #814 on EDHREC$0.36
Untapped land for all your colors · #98 on EDHREC$0.27
Untapped land for all your colors · #61 on EDHREC$6.45
Untapped land for all your colors · #174 on EDHREC$0.88
Cut 10
Enters tapped — slows your early turns
Enters tapped — slows your early turns
Enters tapped — slows your early turns
Trims you to 37 lands — the deck runs 40
Trims you to 37 lands — the deck runs 40
Costs 6 mana · Doesn't support the deck's plan
Rarely played (#12,555 on EDHREC) · Doesn't support the deck's plan
Extra card draw: deck already has 11 (~10 is plenty)
Rarely played (#11,243 on EDHREC) · Doesn't support the deck's plan
Rarely played (#11,861 on EDHREC) · Costs 6 mana
Quantum Quandrix decklist
Commander (1)
Creatures (28)
- 1Arashi, the Sky Asunder$0.27
- 1Biomathematician$0.16
- 1Champion of Wits$0.23
- 1Coiling Oracle$0.28
- 1Crafty Cutpurse$0.33
- 1Curiosity Crafter$0.88
- 1Deekah, Fractal Theorist$1.27
- 1Desolation Twin$1.01
- 1Esix, Fractal Bloom$0.50
- 1Forgotten Ancient$0.57
- 1Guardian Augmenter$1.63
- 1Hornet Nest$1.27
- 1Hornet Queen$0.34
- 1Hydra Broodmaster$0.37
- 1Incubation Druid$2.01
- 1Kaseto, Orochi Archmage$0.55
- 1Kazandu Tuskcaller$0.28
- 1Managorger Hydra$1.38
- 1Master Biomancer$1.47
- 1Plaxcaster Frogling$0.54
- 1Quandrix Cultivator$0.27
- 1Rampaging Baloths$0.33
- 1Reef Worm$0.24
- 1Ruxa, Patient Professor$5.99
- 1Spawning Kraken$12.69
- 1Terastodon$0.39
- 1Trygon Predator$0.22
- 1Zimone, Quandrix Prodigy$0.25
Planeswalkers (1)
- 1Garruk, Primal Hunter$2.30
Instants (9)
- 1Beast Within$0.94
- 1Biomass Mutation$0.22
- 1Commander's Insight$0.40
- 1Eureka Moment$0.21
- 1Krosan Grip$1.61
- 1Perplexing Test$0.35
- 1Rapid Hybridization$2.10
- 1Return of the Wildspeaker$1.83
- 1Theoretical Duplication$0.56
Sorceries (12)
- 1Curse of the Swine$0.28
- 1Ezuri's Predation$3.00
- 1Golden Ratio$0.14
- 1Incubation // Incongruity$0.32
- 1Kodama's Reach$1.84
- 1Nissa's Expedition$0.36
- 1Oversimplify$0.22
- 1Rampant Growth$0.61
- 1Replication Technique$0.43
- 1Rite of Replication$0.40
- 1Shamanic Revelation$1.59
- 1Spitting Image$0.29
Artifacts (7)
- 1Arcane Signet$0.61
- 1Fractal Harness$0.77
- 1Geometric Nexus$0.36
- 1Idol of Oblivion$4.36
- 1Sequence Engine$0.21
- 1Simic Signet$0.32
- 1Sol Ring$1.90
Enchantments (2)
- 1Paradox Zone$1.06
- 1Primal Empathy$0.31
Lands (40)
- 1Blighted Woodland$0.35
- 1Command Tower$0.39
- 1Exotic Orchard$0.28
- 6Forest$0.12
- 5Forest$0.15
- 5Island$0.20
- 5Island$0.13
- 1Llanowar Reborn$0.34
- 1Lonely Sandbar$0.27
- 1Lumbering Falls$0.26
- 1Mosswort Bridge$0.38
- 1Myriad Landscape$0.39
- 1Novijen, Heart of Progress$0.37
- 1Opal Palace$0.31
- 1Oran-Rief, the Vastwood$0.61
- 1Quandrix Campus$0.17
- 1Rogue's Passage$0.48
- 1Simic Growth Chamber$0.31
- 1Study Hall$0.26
- 1Temple of Mystery$0.25
- 1Temple of the False God$0.23
- 1Tranquil Thicket$0.29
- 1Yavimaya Coast$0.50
FAQ
How much is the Quantum Quandrix precon worth?
At current prices the 100 cards in Quantum Quandrix are worth about $82.57 as singles (cheapest printings, TCGplayer market price as of November 6, 2026).
What are the best budget upgrades for Quantum Quandrix?
For about $23.02, our top picks are Swiftfoot Boots, Heroic Intervention, Aetherize, Counterspell, Chasm Skulker. The full 10-card plan with cuts is above, and the upgrade tool can rebuild it for any budget.
What should I cut from Quantum Quandrix?
Start with Lumbering Falls, Quandrix Campus, Llanowar Reborn, Lonely Sandbar. These are the least-played or slowest cards that don't support the deck's plan.
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