Koma, Cosmos Serpent (Commander) - Upgraded

Koma, Cosmos Serpent
Rank #289
311decks
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Background image for Can You Build Simic in Commander Without... Going Simic?
Arnaud Gompertz
Aug 6, 2025
Arnaud Gompertz
Can You Build Simic in Commander Without... Going Simic?
Can you go Simic without doing the Simic stuff that everyone dreads? Yes you can! Arnaud is here with some uncanny Commander deck ideas.
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Creatures
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Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Chameleon, Master of Disguise
18%inclusion17 decks95 decks
16%synergy
Impostor Syndrome
6.3%inclusion6 decks95 decks
4%synergy
The Clone Saga
3.0%inclusion3 decks100 decks
2%synergy
Amazing Acrobatics
2.1%inclusion2 decks95 decks
2%synergy
Spider-Sense
2.1%inclusion2 decks95 decks
1%synergy
High Synergy Cards
Adrix and Nev, Twincasters
75%inclusion232 decks311 decks
66%synergy
Whelming Wave
76%inclusion237 decks311 decks
65%synergy
Elemental Bond
65%inclusion203 decks311 decks
60%synergy
Spark Double
65%inclusion202 decks311 decks
55%synergy
Koma, World-Eater
64%inclusion196 decks307 decks
50%synergy
Junk Winder
55%inclusion171 decks311 decks
48%synergy
Parallel Lives
53%inclusion165 decks311 decks
47%synergy
Serpent of Yawning Depths
53%inclusion166 decks311 decks
47%synergy
Irenicus's Vile Duplication
50%inclusion154 decks311 decks
43%synergy
Doubling Season
50%inclusion156 decks311 decks
40%synergy
Top Cards
Cultivate
76%inclusion236 decks311 decks
29%synergy
Counterspell
73%inclusion226 decks311 decks
22%synergy
Rampant Growth
70%inclusion218 decks311 decks
29%synergy
Kodama's Reach
68%inclusion212 decks311 decks
31%synergy
Beast Within
59%inclusion183 decks311 decks
8%synergy
Nature's Lore
55%inclusion171 decks311 decks
25%synergy
Farseek
52%inclusion162 decks311 decks
28%synergy
Heroic Intervention
51%inclusion158 decks311 decks
21%synergy
Growth Spiral
50%inclusion156 decks311 decks
6%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion155 decks311 decks
33%synergy
Game Changers
Cyclonic Rift
36%inclusion112 decks311 decks
9%synergy
Rhystic Study
33%inclusion103 decks311 decks
11%synergy
Seedborn Muse
24%inclusion74 decks311 decks
8%synergy
Fierce Guardianship
24%inclusion74 decks311 decks
6%synergy
Worldly Tutor
17%inclusion53 decks311 decks
1%synergy
Consecrated Sphinx
16%inclusion50 decks311 decks
7%synergy
Force of Will
5.8%inclusion18 decks311 decks
-4%synergy
The One Ring
5.1%inclusion16 decks311 decks
-3%synergy
Creatures
Sakashima of a Thousand Faces
45%inclusion140 decks311 decks
40%synergy
Llanowar Elves
44%inclusion138 decks311 decks
17%synergy
Spawning Kraken
43%inclusion135 decks311 decks
36%synergy
Arixmethes, Slumbering Isle
42%inclusion132 decks311 decks
29%synergy
Sakura-Tribe Elder
41%inclusion127 decks311 decks
21%synergy
Birds of Paradise
39%inclusion122 decks311 decks
12%synergy
Tatyova, Benthic Druid
38%inclusion117 decks311 decks
6%synergy
Craterhoof Behemoth
36%inclusion111 decks311 decks
26%synergy
Elvish Mystic
35%inclusion108 decks311 decks
11%synergy
Sakashima the Impostor
35%inclusion108 decks311 decks
32%synergy
Garruk's Packleader
32%inclusion100 decks311 decks
30%synergy
Murkfiend Liege
32%inclusion99 decks311 decks
17%synergy
Hullbreaker Horror
29%inclusion91 decks311 decks
12%synergy
Summon: Leviathan
29%inclusion62 decks216 decks
22%synergy
Eternal Witness
26%inclusion80 decks311 decks
4%synergy
Ohran Frostfang
26%inclusion80 decks311 decks
22%synergy
Fyndhorn Elves
22%inclusion69 decks311 decks
6%synergy
Roaming Throne
22%inclusion67 decks311 decks
13%synergy
Enduring Vitality
21%inclusion64 decks307 decks
13%synergy
Coiling Oracle
20%inclusion63 decks311 decks
7%synergy
Archetype of Imagination
20%inclusion62 decks311 decks
16%synergy
Octomancer
19%inclusion60 decks309 decks
15%synergy
Slinn Voda, the Rising Deep
18%inclusion57 decks311 decks
12%synergy
Fanatic of Rhonas
18%inclusion55 decks310 decks
12%synergy
Esix, Fractal Bloom
18%inclusion55 decks311 decks
14%synergy
Starwinder
15%inclusion23 decks151 decks
8%synergy
Scourge of Fleets
15%inclusion47 decks311 decks
7%synergy
Reclamation Sage
14%inclusion45 decks311 decks
0%synergy
Enduring Curiosity
14%inclusion44 decks308 decks
11%synergy
Curiosity Crafter
13%inclusion41 decks311 decks
10%synergy
Nadir Kraken
13%inclusion41 decks311 decks
9%synergy
Scute Swarm
13%inclusion40 decks311 decks
-8%synergy
Saryth, the Viper's Fang
13%inclusion39 decks311 decks
11%synergy
Uro, Titan of Nature's Wrath
13%inclusion39 decks311 decks
3%synergy
Glasspool Mimic
12%inclusion38 decks311 decks
8%synergy
Circle of Dreams Druid
12%inclusion37 decks311 decks
10%synergy
Toski, Bearer of Secrets
12%inclusion37 decks311 decks
8%synergy
Xolatoyac, the Smiling Flood
12%inclusion36 decks311 decks
4%synergy
Stormtide Leviathan
11%inclusion34 decks311 decks
5%synergy
Avenger of Zendikar
11%inclusion33 decks311 decks
-8%synergy
Azusa, Lost but Seeking
10%inclusion32 decks311 decks
-4%synergy
Lotus Cobra
10%inclusion32 decks311 decks
-4%synergy
Tireless Provisioner
10%inclusion30 decks311 decks
-6%synergy
Nezahal, Primal Tide
9.0%inclusion28 decks311 decks
-2%synergy
Clever Impersonator
9.0%inclusion28 decks311 decks
4%synergy
Delighted Halfling
8.7%inclusion27 decks311 decks
-3%synergy
Phyrexian Metamorph
8.4%inclusion26 decks311 decks
0%synergy
Troyan, Gutsy Explorer
8.0%inclusion25 decks311 decks
5%synergy
Progenitor Mimic
8.0%inclusion25 decks311 decks
3%synergy
Auton Soldier
8.0%inclusion25 decks311 decks
6%synergy
Instants
Double Major
42%inclusion130 decks311 decks
33%synergy
Negate
40%inclusion123 decks311 decks
13%synergy
An Offer You Can't Refuse
38%inclusion117 decks311 decks
15%synergy
Pongify
36%inclusion113 decks311 decks
12%synergy
Arcane Denial
35%inclusion108 decks311 decks
12%synergy
Second Harvest
34%inclusion105 decks311 decks
27%synergy
Return of the Wildspeaker
32%inclusion100 decks311 decks
22%synergy
Mana Drain
30%inclusion92 decks311 decks
14%synergy
Rapid Hybridization
28%inclusion88 decks311 decks
2%synergy
Swan Song
26%inclusion82 decks311 decks
7%synergy
Reality Shift
21%inclusion65 decks311 decks
6%synergy
Simic Charm
18%inclusion56 decks311 decks
10%synergy
Krosan Grip
18%inclusion55 decks311 decks
9%synergy
Brainstorm
16%inclusion49 decks311 decks
1%synergy
Snakeskin Veil
15%inclusion47 decks311 decks
9%synergy
Nature's Claim
15%inclusion47 decks311 decks
5%synergy
Planar Genesis
15%inclusion46 decks310 decks
4%synergy
Tamiyo's Safekeeping
15%inclusion46 decks311 decks
9%synergy
Voidslime
14%inclusion45 decks311 decks
9%synergy
Harrow
14%inclusion44 decks311 decks
2%synergy
Plasm Capture
14%inclusion43 decks311 decks
10%synergy
Sink into Stupor
14%inclusion42 decks310 decks
2%synergy
Stubborn Denial
13%inclusion40 decks311 decks
10%synergy
Aetherize
11%inclusion35 decks311 decks
0%synergy
Entish Restoration
10%inclusion32 decks311 decks
1%synergy
Tyvar's Stand
10%inclusion31 decks311 decks
7%synergy
Mystic Reflection
10%inclusion31 decks311 decks
7%synergy
Collective Resistance
10%inclusion30 decks310 decks
6%synergy
Chord of Calling
10%inclusion30 decks311 decks
2%synergy
Return to Nature
10%inclusion30 decks311 decks
4%synergy
Slip Out the Back
8.7%inclusion27 decks311 decks
5%synergy
Perplexing Test
8.7%inclusion27 decks311 decks
4%synergy
Eureka Moment
8.4%inclusion26 decks311 decks
-3%synergy
Force of Negation
8.4%inclusion26 decks311 decks
0%synergy
Auroral Procession
8.1%inclusion21 decks258 decks
4%synergy
Archdruid's Charm
8.1%inclusion25 decks310 decks
2%synergy
Fog
8.0%inclusion25 decks311 decks
5%synergy
Decisive Denial
8.0%inclusion25 decks311 decks
3%synergy
Resculpt
7.7%inclusion24 decks311 decks
1%synergy
Sublime Epiphany
7.4%inclusion23 decks311 decks
5%synergy
Disallow
7.1%inclusion22 decks311 decks
5%synergy
Lazotep Plating
7.1%inclusion22 decks311 decks
6%synergy
Three Steps Ahead
6.5%inclusion20 decks310 decks
4%synergy
Refute
6.2%inclusion19 decks307 decks
4%synergy
Pact of Negation
6.1%inclusion19 decks311 decks
-1%synergy
Force of Vigor
5.8%inclusion18 decks311 decks
1%synergy
Strix Serenade
5.5%inclusion17 decks310 decks
2%synergy
Cackling Counterpart
5.5%inclusion17 decks311 decks
2%synergy
Joint Exploration
5.5%inclusion17 decks311 decks
0%synergy
Noxious Revival
5.5%inclusion17 decks311 decks
-1%synergy
Sorceries
Three Visits
48%inclusion148 decks311 decks
25%synergy
Skyshroud Claim
36%inclusion111 decks311 decks
26%synergy
Overwhelming Stampede
25%inclusion78 decks311 decks
13%synergy
Quantum Misalignment
24%inclusion76 decks311 decks
22%synergy
Explore
23%inclusion73 decks311 decks
3%synergy
Rite of Replication
16%inclusion51 decks311 decks
9%synergy
Migration Path
15%inclusion48 decks311 decks
12%synergy
Shamanic Revelation
15%inclusion47 decks311 decks
10%synergy
Bala Ged Recovery
14%inclusion43 decks311 decks
4%synergy
Urban Evolution
13%inclusion39 decks311 decks
3%synergy
Ponder
12%inclusion36 decks311 decks
4%synergy
Rishkar's Expertise
11%inclusion35 decks311 decks
3%synergy
Finale of Devastation
11%inclusion33 decks311 decks
-1%synergy
Harmonize
11%inclusion33 decks311 decks
5%synergy
Triumph of the Hordes
10%inclusion32 decks311 decks
7%synergy
Preordain
10%inclusion32 decks311 decks
2%synergy
Explosive Vegetation
10%inclusion31 decks311 decks
4%synergy
Sea Gate Restoration
8.7%inclusion27 decks311 decks
3%synergy
Curse of the Swine
8.0%inclusion25 decks311 decks
-3%synergy
Distant Melody
7.7%inclusion24 decks311 decks
4%synergy
Windfall
7.4%inclusion23 decks311 decks
3%synergy
Into the North
7.1%inclusion22 decks311 decks
6%synergy
Search for Tomorrow
7.1%inclusion22 decks311 decks
2%synergy
Regrowth
6.8%inclusion21 decks311 decks
3%synergy
Overrun
6.4%inclusion20 decks311 decks
4%synergy
Preposterous Proportions
5.9%inclusion18 decks307 decks
4%synergy
Circuitous Route
5.8%inclusion18 decks311 decks
4%synergy
Tempt with Discovery
5.8%inclusion18 decks311 decks
2%synergy
Flare of Cultivation
5.5%inclusion17 decks310 decks
3%synergy
Green Sun's Zenith
5.5%inclusion17 decks311 decks
-3%synergy
Raise the Palisade
5.5%inclusion17 decks311 decks
-1%synergy
Broken Bond
5.1%inclusion16 decks311 decks
0%synergy
Spitting Image
5.1%inclusion16 decks311 decks
3%synergy
Ezuri's Predation
5.1%inclusion16 decks311 decks
-3%synergy
Utility Artifacts
Lightning Greaves
42%inclusion132 decks311 decks
21%synergy
Helm of the Host
40%inclusion125 decks311 decks
35%synergy
Swiftfoot Boots
36%inclusion111 decks311 decks
10%synergy
Combine Chrysalis
24%inclusion76 decks311 decks
20%synergy
Mirror Box
16%inclusion50 decks311 decks
13%synergy
Emerald Medallion
14%inclusion43 decks311 decks
11%synergy
Bident of Thassa
11%inclusion33 decks311 decks
3%synergy
The Great Henge
9.3%inclusion29 decks311 decks
0%synergy
Eldrazi Monument
9.3%inclusion29 decks311 decks
9%synergy
Idol of Oblivion
9.0%inclusion28 decks311 decks
5%synergy
Sapphire Medallion
9.0%inclusion28 decks311 decks
6%synergy
Coat of Arms
5.8%inclusion18 decks311 decks
4%synergy
Enchantments
Tribute to the World Tree
45%inclusion139 decks311 decks
38%synergy
Kindred Discovery
34%inclusion106 decks311 decks
24%synergy
Mystic Remora
26%inclusion81 decks311 decks
11%synergy
Primal Vigor
20%inclusion62 decks311 decks
17%synergy
Cryptolith Rite
18%inclusion56 decks311 decks
15%synergy
Growing Rites of Itlimoc
18%inclusion55 decks311 decks
12%synergy
Garruk's Uprising
16%inclusion50 decks311 decks
0%synergy
Wild Growth
15%inclusion48 decks311 decks
7%synergy
Utopia Sprawl
14%inclusion43 decks311 decks
7%synergy
Beastmaster Ascension
14%inclusion42 decks311 decks
10%synergy
Exploration
14%inclusion42 decks311 decks
0%synergy
Paradox Haze
14%inclusion42 decks311 decks
13%synergy
Propaganda
13%inclusion40 decks311 decks
6%synergy
Defense of the Heart
13%inclusion39 decks311 decks
10%synergy
Imprisoned in the Moon
12%inclusion38 decks311 decks
8%synergy
Moonlit Meditation
12%inclusion18 decks151 decks
10%synergy
Sylvan Library
12%inclusion36 decks311 decks
2%synergy
Extravagant Replication
11%inclusion34 decks311 decks
9%synergy
Wilderness Reclamation
11%inclusion34 decks311 decks
2%synergy
Unnatural Growth
9.0%inclusion28 decks311 decks
6%synergy
Kenrith's Transformation
9.0%inclusion28 decks311 decks
4%synergy
Burgeoning
7.4%inclusion23 decks311 decks
0%synergy
Asceticism
7.1%inclusion22 decks311 decks
4%synergy
Opposition
6.1%inclusion19 decks311 decks
6%synergy
Verity Circle
5.8%inclusion18 decks311 decks
5%synergy
Ominous Seas
5.8%inclusion18 decks311 decks
1%synergy
Leyline of Anticipation
5.5%inclusion17 decks311 decks
1%synergy
Dismiss into Dream
5.5%inclusion17 decks311 decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion65 decks311 decks
14%synergy
Kiora, the Crashing Wave
7.1%inclusion22 decks311 decks
4%synergy
Utility Lands
Reliquary Tower
62%inclusion192 decks311 decks
11%synergy
Temple of the False God
23%inclusion70 decks311 decks
7%synergy
Yavimaya, Cradle of Growth
20%inclusion63 decks311 decks
-2%synergy
Boseiju, Who Endures
19%inclusion58 decks311 decks
-4%synergy
Mosswort Bridge
19%inclusion58 decks311 decks
1%synergy
Mystic Sanctuary
16%inclusion51 decks311 decks
4%synergy
Mistrise Village
16%inclusion42 decks258 decks
6%synergy
Otawara, Soaring City
16%inclusion50 decks311 decks
-3%synergy
Rogue's Passage
14%inclusion45 decks311 decks
-7%synergy
Command Beacon
14%inclusion44 decks311 decks
10%synergy
Alchemist's Refuge
14%inclusion42 decks311 decks
-4%synergy
Castle Garenbrig
12%inclusion36 decks311 decks
7%synergy
Three Tree City
11%inclusion35 decks309 decks
6%synergy
Evendo, Waking Haven
11%inclusion17 decks153 decks
6%synergy
Castle Vantress
8.7%inclusion27 decks311 decks
2%synergy
Lumbering Falls
7.1%inclusion22 decks311 decks
0%synergy
Restless Vinestalk
6.4%inclusion20 decks311 decks
1%synergy
Mana Artifacts
Sol Ring
92%inclusion285 decks311 decks
11%synergy
Arcane Signet
72%inclusion225 decks311 decks
9%synergy
Thought Vessel
38%inclusion118 decks311 decks
18%synergy
Simic Signet
35%inclusion110 decks311 decks
3%synergy
Talisman of Curiosity
28%inclusion87 decks311 decks
7%synergy
Fellwar Stone
12%inclusion37 decks311 decks
2%synergy
Commander's Sphere
10%inclusion32 decks311 decks
2%synergy
Decanter of Endless Water
7.1%inclusion22 decks311 decks
2%synergy
Thran Dynamo
7.1%inclusion22 decks311 decks
4%synergy
Mind Stone
6.4%inclusion20 decks311 decks
2%synergy
Lands
Island
94%inclusion293 decks311 decks
-1%synergy
Forest
94%inclusion291 decks311 decks
-2%synergy
Command Tower
90%inclusion281 decks311 decks
5%synergy
Hinterland Harbor
62%inclusion192 decks311 decks
3%synergy
Breeding Pool
56%inclusion175 decks311 decks
11%synergy
Yavimaya Coast
56%inclusion174 decks311 decks
4%synergy
Rejuvenating Springs
54%inclusion168 decks311 decks
10%synergy
Simic Growth Chamber
49%inclusion153 decks311 decks
0%synergy
Flooded Grove
48%inclusion149 decks311 decks
8%synergy
Dreamroot Cascade
46%inclusion144 decks311 decks
5%synergy
Temple of Mystery
39%inclusion120 decks311 decks
0%synergy
Misty Rainforest
38%inclusion118 decks311 decks
7%synergy
Vineglimmer Snarl
36%inclusion113 decks311 decks
-2%synergy
Barkchannel Pathway
33%inclusion104 decks311 decks
13%synergy
Evolving Wilds
27%inclusion83 decks311 decks
2%synergy
Exotic Orchard
26%inclusion80 decks311 decks
2%synergy
Waterlogged Grove
24%inclusion75 decks311 decks
4%synergy
Thornwood Falls
24%inclusion75 decks311 decks
6%synergy
Hedge Maze
24%inclusion74 decks310 decks
4%synergy
Myriad Landscape
23%inclusion71 decks311 decks
0%synergy
Tangled Islet
22%inclusion68 decks311 decks
5%synergy
Willowrush Verge
21%inclusion62 decks301 decks
5%synergy
Rimewood Falls
20%inclusion62 decks311 decks
10%synergy
Terramorphic Expanse
19%inclusion58 decks311 decks
-1%synergy
Botanical Sanctum
16%inclusion49 decks311 decks
3%synergy
Tropical Island
14%inclusion45 decks311 decks
0%synergy
Fabled Passage
14%inclusion44 decks311 decks
0%synergy
Overflowing Basin
14%inclusion43 decks310 decks
-5%synergy
Bala Ged Recovery
14%inclusion43 decks311 decks
4%synergy
Sink into Stupor
14%inclusion42 decks310 decks
2%synergy
Path of Ancestry
13%inclusion41 decks311 decks
-4%synergy
Snow-Covered Island
13%inclusion40 decks311 decks
6%synergy
Snow-Covered Forest
13%inclusion40 decks311 decks
6%synergy
Glasspool Mimic
12%inclusion38 decks311 decks
8%synergy
Simic Guildgate
12%inclusion37 decks311 decks
2%synergy
Sea Gate Restoration
8.7%inclusion27 decks311 decks
3%synergy
Littjara Mirrorlake
8.4%inclusion26 decks311 decks
4%synergy
Blighted Woodland
8.0%inclusion25 decks311 decks
0%synergy
Scalding Tarn
8.0%inclusion25 decks311 decks
-2%synergy
Verdant Catacombs
8.0%inclusion25 decks311 decks
-2%synergy
Flooded Strand
8.0%inclusion25 decks311 decks
-3%synergy
Polluted Delta
7.7%inclusion24 decks311 decks
-3%synergy
Windswept Heath
7.4%inclusion23 decks311 decks
-3%synergy
Wooded Foothills
7.1%inclusion22 decks311 decks
-2%synergy
Prismatic Vista
6.8%inclusion21 decks311 decks
-1%synergy
Woodland Stream
6.8%inclusion21 decks311 decks
1%synergy
Quandrix Campus
6.4%inclusion20 decks311 decks
-1%synergy
Tanglepool Bridge
5.1%inclusion16 decks311 decks
1%synergy
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