Chromium, the Mutable
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Legendary Creature — Elder Dragon

Esper flash control that answers spells at instant speed and finishes games with a hexproof, unblockable Elder Dragon.
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Chromium is a 7-mana 7/7 flying Elder Dragon with flash that can't be countered. Its other ability is the protection plan: discard a card and, until end of turn, it becomes a 1/1 Human with hexproof that can't be blocked, losing its other abilities. That makes it hard to kill with targeted removal and lets it chip in when the skies are blocked. The deck around it plays like classic control, holding mana up for counterspells, removal and flash creatures, then dropping Chromium at the end of an opponent's turn once the table is under control.
In the recorded games, the deck spent most turns reacting. Opposition Agent and Notion Thief punished tutors and extra card draw, which slowed down combo and value decks noticeably. Counterspells and flash creatures let it punish attacks and keep the board in check, and Sword of Body and Mind showed up as an extra source of card advantage. Chromium usually arrived late as the finisher rather than an early threat. The weakness was speed: at 7 mana the commander takes a while, and the deck depends on its answers lining up with what opponents actually play.
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Buy Chromium, the Mutable
Videos
Commander gameplay videos featuring Chromium, the Mutable.
CLASSIC DRAGON COMMANDER | Magic 2019 Box Brawl
CovertGoBlue and Ashlizzle face off in an MTGArena Streamer Showdown | Commander at Home Episode 51
Chromium vs Meren vs Azlask vs Mahault EDH / CMDR game play for Magic: The Gathering
POLITICAL CRIMES of the UNDEAD 💀 Gisa 🧟♀️ Inniaz 🦅 Atla 🦖 Chromium 🐉 WPCS #109
Dragons and Mutants and Bears, Oh My! Chromium Ayula Ivy Sissay | Worst Possible Commander Show #37
Krenko vs Ayli vs Chromium vs Esika EDH / CMDR game play for Magic: The Gathering
The Stupidest 4-Way Control Mirror | Commander Clash S16 E06
Atraxa vs Mishra vs Toralf vs Chromium EDH / CMDR game play for Magic: The Gathering
Sunday Funday Commander with Omar, Rodrigo, Manuel, Andre, and me!
TRUE EDH w/ CovertGoBlue & Taalia Vess | Extra Turns 34 | Magic: The Gathering Commander Gameplay
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New Cards
Fresh cards from recent sets that players are experimenting with in Chromium, the Mutable decks.
High Synergy Cards
Cards that work exceptionally well with Chromium, the Mutable's abilities and overall game plan.
Wavebreak Hippocamp
Cunning Nightbonder
Slitherwisp
Sphinx's Revelation
Hullbreaker Horror
Inkshield
Waterlogged TeachingsTop Cards
The most popular and reliable cards that form the backbone of successful Chromium, the Mutable decks.
Wavebreak Hippocamp
Cunning Nightbonder
Slitherwisp
Inkshield
Void Rend
Dovin's Veto
Anguished Unmaking
Counterspell
Path to Exile
Swords to PlowsharesGame Changers
Powerful cards that can single-handedly turn the tide of a game when resolved.
Notion Thief
Farewell
Cyclonic Rift
Orcish Bowmasters
Opposition Agent
Teferi's Protection
Narset, Parter of Veils
Mystical Tutor
Force of Will
Ancient Tomb
The One Ring
Vampiric Tutor
Enlightened Tutor
Demonic Tutor
Smothering Tithe
Rhystic StudyCreatures
Essential creatures that complement Chromium, the Mutable's strategy through synergy, utility, or raw power.
Hullbreaker Horror
Deep Gnome Terramancer
Cathar Commando
Faerie Mastermind
Selfless Squire
Notion Thief
Torrential Gearhulk
Aboleth Spawn
Voracious Tome-Skimmer
Archivist of Oghma
Guardian of Faith
Hydroelectric Specimen
Tishana's Tidebinder
Smirking Spelljacker
Mocking Doppelganger
Snapcaster Mage
Weeping Angel
Aven Mindcensor
Aven Interrupter
Academy Loremaster
Callidus Assassin
Containment Priest
Solitude
Spectral Sailor
Enduring Curiosity
Stunt Double
Restoration Angel
Obscura Interceptor
Portal Mage
Brazen Borrower
Subtlety
Sicarian Infiltrator
Alms Collector
Baleful Strix
High Fae Trickster
Orcish Bowmasters
Opposition Agent
Witch Enchanter
Solemn Simulacrum
Esper SentinelInstants
Key instant-speed responses for protection, removal, and keeping Chromium, the Mutable safe.
Sphinx's Revelation
Waterlogged Teachings
Aetherize
Pull from Tomorrow
Fact or Fiction
Final Showdown
Stinging Study
Mystic Confluence
Rewind
Memory Deluge
Despark
Unwind
Generous Gift
Aetherspouts
Settle the Wreckage
Arcane Denial
Mystical Teachings
Heliod's Intervention
Negate
Sink into Stupor
Fell the Profane
Sublime Epiphany
Consult the Star Charts
Esper Charm
Dig Through Time
Three Steps Ahead
Silundi Vision
Blue Sun's Zenith
Evacuation
Render Silent
Reins of Power
Cryptic Command
Hostile Negotiations
Soul Shatter
Cyclonic Rift
Stroke of Midnight
Disallow
Teferi's Protection
Mana Drain
Utter End
Brainstorm
Frantic Search
Mortify
Mystical Tutor
Force of Will
An Offer You Can't Refuse
Swan Song
Vampiric Tutor
Enlightened Tutor
Dark RitualSorceries
Important sorcery spells that advance Chromium, the Mutable's game plan and control the board.
Supreme Verdict
Rout
Crux of Fate
Painful Truths
Open the Armory
Divine Reckoning
Farewell
Ondu Inversion
Sea Gate Restoration
Single Combat
Approach of the Second Sun
Lórien Revealed
Treasure Cruise
Austere Command
Wrath of God
Night's Whisper
Damn
Time Wipe
Preordain
Ponder
Toxic Deluge
Windfall
Demonic Tutor
ReanimateUtility Artifacts
Versatile artifacts that provide ongoing value, card selection, or strategic advantages.
Blackblade Reforged
Wayfarer's Bauble
Vorpal Sword
Mindsplice Apparatus
Fireshrieker
Sword of Feast and Famine
Excalibur, Sword of Eden
Shadowspear
Mithril Coat
Sword of the Animist
Monument to Endurance
Archaeomancer's Map
The One Ring
Swiftfoot Boots
Lightning GreavesEnchantments
Powerful enchantments that support Chromium, the Mutable's strategy and create lasting battlefield effects.
Amphibian Downpour
Dress Down
Duelist's Heritage
Eaten by Piranhas
Twinblade Blessing
Nowhere to Run
Eel Umbra
Changing Loyalty
Righteous Authority
Phyresis
Omen of the Sea
Battle Mastery
Staggering Insight
Leyline of Anticipation
Land Tax
Ghostly Prison
Steel of the Godhead
Phyrexian Arena
Observed Stasis
Sigarda's Aid
Trouble in Pairs
All That Glitters
Propaganda
Gleaming Splendor
Mystic Remora
Blind Obedience
Black Market Connections
Authority of the Consuls
Smothering Tithe
Rhystic StudyPlaneswalkers
Planeswalkers that work alongside Chromium, the Mutable to provide ongoing value and board presence.
The Wandering Emperor
Teferi, Hero of Dominaria
Narset, Parter of Veils
Teferi, Time RavelerUtility Lands
Non-basic lands that offer additional utility beyond just mana production.
Eiganjo, Seat of the Empire
Bojuka Bog
Reliquary Tower
Castle Vantress
Mystic Sanctuary
Otawara, Soaring City
Rogue's Passage
Celestial Colonnade
Takenuma, Abandoned Mire
Maze of Ith
Temple of the False God
Scavenger Grounds
Urborg, Tomb of Yawgmoth
Ancient TombMana Artifacts
Artifacts focused on mana acceleration and color fixing for consistent gameplay.
Azorius Signet
Misleading Signpost
Bender's Waterskin
Dimir Signet
Orzhov Signet
Victory Chimes
Midnight Clock
Talisman of Progress
Mind Stone
Hedron Archive
Thran Dynamo
Worn Powerstone
Thought Vessel
Gilded Lotus
Fellwar Stone
Talisman of Dominance
Talisman of Hierarchy
Decanter of Endless Water
Commander's Sphere
Chromatic Lantern
Arcane Signet
Sol RingLands
The mana base foundation for Chromium, the Mutable decks, ensuring smooth and reliable mana development.
Waterlogged Teachings
Hydroelectric Specimen
Deserted Beach
Shipwreck Marsh
Sink into Stupor
Fell the Profane
Raffine's Tower
Contaminated Landscape
Azorius Chancery
Myriad Landscape
Dimir Aqueduct
Meticulous Archive
Shattered Sanctum
Irrigated Farmland
Glacial Fortress
Sea of Clouds
Drowned Catacomb
Orzhov Basilica
Shadowy Backstreet
Adarkar Wastes
Morphic Pool
Temple of Enlightenment
Isolated Chapel
Hallowed Fountain
Undercity Sewers
Plains
Vault of Champions
Island
Marsh Flats
Floodfarm Verge
Watery Grave
Flooded Strand
Caves of Koilos
Swamp
Polluted Delta
Godless Shrine
Arcane Sanctum
Temple of Deceit
Terramorphic Expanse
Temple of Silence
Darkwater Catacombs
Exotic Orchard
Prairie Stream
Tundra
Command Tower
Underground River
Port Town
Evolving Wilds
Sunken Hollow
Path of AncestryChromium, the Mutable Deck Stats
Based on 2,041 Chromium, the Mutable decks.
| Mana value | Cards |
|---|---|
| 1 | 8 |
| 2 | 20 |
| 3 | 17 |
| 4 | 11 |
| 5 | 5 |
| 6 | 2 |
| 7 | 1 |
- Creature 21
- Instant 18
- Sorcery 6
- Artifact 11
- Enchantment 7
- Planeswalker 1
- Land 35
| Card type | Cards |
|---|---|
| Creature | 21 |
| Instant | 18 |
| Sorcery | 6 |
| Artifact | 11 |
| Enchantment | 7 |
| Planeswalker | 1 |
| Land | 35 |
Lands: 14 basic, 21 nonbasic
| Month | Rank |
|---|---|
| 2024-10 | 636 |
| 2024-11 | 685 |
| 2024-12 | 920 |
| 2025-01 | 842 |
| 2025-02 | 1042 |
| 2025-03 | 1049 |
| 2025-04 | 849 |
| 2025-05 | 923 |
| 2025-06 | 1022 |
| 2025-07 | 978 |
| 2025-08 | 998 |
| 2025-09 | 1092 |
| 2025-10 | 1049 |
| 2025-11 | 1159 |
| 2025-12 | 968 |
| 2026-01 | 1182 |
| 2026-02 | 1100 |
| 2026-03 | 1191 |
| 2026-04 | 1173 |
| 2026-05 | 1099 |
| 2026-06 | 1098 |
| 2026-07 | 1253 |
| 2026-08 | 1312 |
| 2026-09 | 766 |
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