Koma, Cosmos Serpent (Commander) - Core

Koma, Cosmos Serpent
Rank #289
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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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Enchantments
Battles
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Chameleon, Master of Disguise
6.7%inclusion3 decks45 decks
5%synergy
Impostor Syndrome
6.7%inclusion3 decks45 decks
5%synergy
Doc Ock's Tentacles
2.2%inclusion1 decks45 decks
2%synergy
The Clone Saga
2.2%inclusion1 decks46 decks
1%synergy
The Terror of Serpent's Pass
1.6%inclusion1 decks61 decks
2%synergy
High Synergy Cards
Whelming Wave
76%inclusion459 decks604 decks
65%synergy
Junk Winder
63%inclusion381 decks604 decks
56%synergy
Adrix and Nev, Twincasters
63%inclusion378 decks604 decks
54%synergy
Elemental Bond
56%inclusion337 decks604 decks
50%synergy
Koma, World-Eater
63%inclusion230 decks366 decks
49%synergy
Irenicus's Vile Duplication
49%inclusion294 decks604 decks
42%synergy
Serpent of Yawning Depths
44%inclusion265 decks604 decks
37%synergy
Garruk's Packleader
39%inclusion238 decks604 decks
37%synergy
Spark Double
45%inclusion274 decks604 decks
36%synergy
Kodama's Reach
72%inclusion437 decks604 decks
35%synergy
Top Cards
Cultivate
82%inclusion494 decks604 decks
35%synergy
Rampant Growth
72%inclusion437 decks604 decks
32%synergy
Counterspell
67%inclusion407 decks604 decks
17%synergy
Growth Spiral
67%inclusion403 decks604 decks
22%synergy
Beast Within
61%inclusion369 decks604 decks
10%synergy
Negate
57%inclusion344 decks604 decks
31%synergy
Arixmethes, Slumbering Isle
49%inclusion294 decks604 decks
35%synergy
Tatyova, Benthic Druid
48%inclusion290 decks604 decks
17%synergy
Aesi, Tyrant of Gyre Strait
47%inclusion281 decks604 decks
30%synergy
Nature's Lore
46%inclusion277 decks604 decks
16%synergy
Game Changers
Seedborn Muse
10%inclusion61 decks604 decks
-6%synergy
Creatures
Llanowar Elves
44%inclusion264 decks604 decks
16%synergy
Sakura-Tribe Elder
44%inclusion263 decks604 decks
24%synergy
Murkfiend Liege
43%inclusion257 decks604 decks
27%synergy
Spawning Kraken
42%inclusion254 decks604 decks
35%synergy
Slinn Voda, the Rising Deep
37%inclusion221 decks604 decks
30%synergy
Elvish Mystic
35%inclusion211 decks604 decks
11%synergy
Coiling Oracle
33%inclusion197 decks604 decks
19%synergy
Hullbreaker Horror
31%inclusion190 decks604 decks
14%synergy
Esix, Fractal Bloom
27%inclusion162 decks604 decks
23%synergy
Scourge of Fleets
26%inclusion160 decks604 decks
18%synergy
Octomancer
26%inclusion123 decks473 decks
21%synergy
Eternal Witness
26%inclusion156 decks604 decks
4%synergy
Archetype of Imagination
25%inclusion153 decks604 decks
21%synergy
Sakashima the Impostor
25%inclusion152 decks604 decks
22%synergy
Summon: Leviathan
25%inclusion33 decks134 decks
17%synergy
Fyndhorn Elves
24%inclusion146 decks604 decks
8%synergy
Nadir Kraken
23%inclusion140 decks604 decks
19%synergy
Sakashima of a Thousand Faces
23%inclusion139 decks604 decks
18%synergy
Ohran Frostfang
23%inclusion136 decks604 decks
19%synergy
Reclamation Sage
22%inclusion130 decks604 decks
7%synergy
Birds of Paradise
22%inclusion130 decks604 decks
-6%synergy
Xolatoyac, the Smiling Flood
20%inclusion119 decks602 decks
12%synergy
Enduring Vitality
19%inclusion82 decks440 decks
11%synergy
Stormtide Leviathan
18%inclusion108 decks604 decks
12%synergy
Rampaging Baloths
17%inclusion105 decks604 decks
0%synergy
Avenger of Zendikar
17%inclusion104 decks604 decks
-1%synergy
Troyan, Gutsy Explorer
17%inclusion102 decks604 decks
14%synergy
Curiosity Crafter
17%inclusion100 decks604 decks
13%synergy
Nezahal, Primal Tide
16%inclusion98 decks604 decks
5%synergy
Scute Swarm
15%inclusion93 decks604 decks
-6%synergy
Inga and Esika
14%inclusion87 decks604 decks
11%synergy
Tromokratis
14%inclusion83 decks604 decks
8%synergy
Kiora, Sovereign of the Deep
14%inclusion83 decks604 decks
12%synergy
Reef Worm
14%inclusion82 decks604 decks
10%synergy
Fanatic of Rhonas
14%inclusion68 decks501 decks
8%synergy
Starwinder
13%inclusion10 decks77 decks
6%synergy
Saryth, the Viper's Fang
12%inclusion70 decks604 decks
10%synergy
Toski, Bearer of Secrets
11%inclusion68 decks604 decks
8%synergy
Roaming Throne
11%inclusion66 decks603 decks
3%synergy
Tireless Provisioner
11%inclusion66 decks604 decks
-4%synergy
Progenitor Mimic
11%inclusion65 decks604 decks
6%synergy
Lotus Cobra
10%inclusion62 decks604 decks
-4%synergy
Enduring Curiosity
10%inclusion45 decks445 decks
7%synergy
Jaheira, Friend of the Forest
10%inclusion61 decks604 decks
6%synergy
Simic Sky Swallower
10%inclusion58 decks604 decks
5%synergy
Loot, Exuberant Explorer
8.9%inclusion32 decks360 decks
1%synergy
Stormsurge Kraken
8.6%inclusion52 decks604 decks
4%synergy
Inkwell Leviathan
8.6%inclusion52 decks604 decks
4%synergy
Uro, Titan of Nature's Wrath
8.4%inclusion51 decks604 decks
-1%synergy
Charix, the Raging Isle
8.3%inclusion50 decks604 decks
5%synergy
Instants
Double Major
43%inclusion260 decks604 decks
34%synergy
Return of the Wildspeaker
37%inclusion223 decks604 decks
26%synergy
Second Harvest
34%inclusion206 decks604 decks
28%synergy
Arcane Denial
32%inclusion194 decks604 decks
10%synergy
Heroic Intervention
29%inclusion178 decks604 decks
-1%synergy
Simic Charm
29%inclusion178 decks604 decks
21%synergy
Pongify
29%inclusion176 decks604 decks
4%synergy
Rapid Hybridization
29%inclusion174 decks604 decks
2%synergy
An Offer You Can't Refuse
25%inclusion153 decks604 decks
3%synergy
Krosan Grip
25%inclusion153 decks604 decks
17%synergy
Reality Shift
24%inclusion144 decks604 decks
9%synergy
Planar Genesis
22%inclusion109 decks501 decks
11%synergy
Eureka Moment
21%inclusion126 decks604 decks
10%synergy
Snakeskin Veil
19%inclusion116 decks604 decks
14%synergy
Harrow
19%inclusion115 decks604 decks
7%synergy
Return to Nature
19%inclusion115 decks604 decks
13%synergy
Brainstorm
17%inclusion102 decks604 decks
3%synergy
Aetherize
17%inclusion101 decks604 decks
5%synergy
Nature's Claim
16%inclusion99 decks604 decks
6%synergy
Tamiyo's Safekeeping
15%inclusion92 decks604 decks
9%synergy
Voidslime
13%inclusion79 decks604 decks
8%synergy
Decisive Denial
12%inclusion74 decks604 decks
7%synergy
Perplexing Test
12%inclusion74 decks604 decks
8%synergy
Entish Restoration
12%inclusion74 decks604 decks
3%synergy
Plasm Capture
12%inclusion72 decks604 decks
8%synergy
Mystic Reflection
10%inclusion63 decks604 decks
8%synergy
Saw It Coming
8.9%inclusion54 decks604 decks
8%synergy
Joint Exploration
8.8%inclusion53 decks604 decks
3%synergy
Resculpt
8.6%inclusion52 decks604 decks
2%synergy
Swan Song
8.4%inclusion51 decks604 decks
-11%synergy
Tyvar's Stand
7.9%inclusion48 decks604 decks
5%synergy
Collective Resistance
7.8%inclusion39 decks502 decks
4%synergy
Stubborn Denial
7.6%inclusion46 decks604 decks
5%synergy
Disdainful Stroke
7.0%inclusion42 decks604 decks
5%synergy
Sublime Epiphany
7.0%inclusion42 decks604 decks
5%synergy
Fact or Fiction
6.5%inclusion39 decks604 decks
4%synergy
Sink into Stupor
6.2%inclusion31 decks502 decks
-5%synergy
Opt
6.1%inclusion37 decks604 decks
-1%synergy
Cancel
6.1%inclusion37 decks604 decks
4%synergy
Roiling Regrowth
5.6%inclusion34 decks604 decks
1%synergy
Mana Drain
5.6%inclusion34 decks604 decks
-10%synergy
Rewind
5.6%inclusion34 decks604 decks
3%synergy
Archdruid's Charm
5.5%inclusion31 decks566 decks
-1%synergy
Lazotep Plating
5.3%inclusion32 decks604 decks
5%synergy
Dispel
5.1%inclusion31 decks604 decks
0%synergy
Sorceries
Farseek
45%inclusion270 decks604 decks
21%synergy
Explore
39%inclusion234 decks604 decks
18%synergy
Three Visits
32%inclusion193 decks604 decks
9%synergy
Skyshroud Claim
31%inclusion185 decks604 decks
21%synergy
Urban Evolution
27%inclusion165 decks604 decks
18%synergy
Overwhelming Stampede
27%inclusion165 decks604 decks
15%synergy
Shamanic Revelation
25%inclusion151 decks604 decks
19%synergy
Quantum Misalignment
22%inclusion130 decks604 decks
19%synergy
Migration Path
21%inclusion127 decks604 decks
18%synergy
Rite of Replication
17%inclusion104 decks604 decks
10%synergy
Search for Tomorrow
16%inclusion97 decks604 decks
11%synergy
Harmonize
16%inclusion96 decks604 decks
10%synergy
Rishkar's Expertise
15%inclusion92 decks604 decks
7%synergy
Explosive Vegetation
15%inclusion90 decks604 decks
9%synergy
Distant Melody
14%inclusion83 decks604 decks
10%synergy
Curse of the Swine
14%inclusion82 decks604 decks
2%synergy
Ravenform
11%inclusion65 decks604 decks
6%synergy
Ezuri's Predation
10%inclusion59 decks604 decks
2%synergy
Bala Ged Recovery
9.1%inclusion55 decks604 decks
-1%synergy
Broken Bond
8.8%inclusion53 decks604 decks
4%synergy
Preposterous Proportions
8.0%inclusion29 decks361 decks
7%synergy
Doppelgang
8.0%inclusion45 decks566 decks
1%synergy
Preordain
7.5%inclusion45 decks604 decks
-1%synergy
Ponder
7.1%inclusion43 decks604 decks
0%synergy
Spitting Image
7.1%inclusion43 decks604 decks
5%synergy
Overrun
7.0%inclusion42 decks604 decks
5%synergy
Triumph of the Hordes
6.1%inclusion37 decks604 decks
3%synergy
Regrowth
5.8%inclusion35 decks604 decks
2%synergy
Croaking Counterpart
5.6%inclusion34 decks604 decks
1%synergy
Aggressive Biomancy
5.6%inclusion28 decks500 decks
0%synergy
Bridgeworks Battle
5.4%inclusion27 decks502 decks
1%synergy
Quasiduplicate
5.3%inclusion32 decks604 decks
3%synergy
Utility Artifacts
Swiftfoot Boots
46%inclusion277 decks604 decks
20%synergy
Combine Chrysalis
34%inclusion207 decks604 decks
30%synergy
Helm of the Host
34%inclusion204 decks604 decks
28%synergy
Lightning Greaves
28%inclusion172 decks604 decks
7%synergy
Idol of Oblivion
19%inclusion114 decks604 decks
15%synergy
Mirror Box
17%inclusion101 decks604 decks
13%synergy
Bident of Thassa
15%inclusion90 decks604 decks
7%synergy
Emerald Medallion
8.8%inclusion53 decks604 decks
6%synergy
Sapphire Medallion
7.5%inclusion45 decks604 decks
4%synergy
Eldrazi Monument
6.6%inclusion40 decks604 decks
6%synergy
Kefnet's Monument
5.3%inclusion32 decks604 decks
4%synergy
Enchantments
Parallel Lives
30%inclusion180 decks604 decks
24%synergy
Garruk's Uprising
28%inclusion168 decks604 decks
12%synergy
Tribute to the World Tree
28%inclusion167 decks604 decks
21%synergy
Doubling Season
25%inclusion153 decks604 decks
16%synergy
Kindred Discovery
21%inclusion129 decks604 decks
11%synergy
Wild Growth
17%inclusion102 decks604 decks
8%synergy
Beastmaster Ascension
17%inclusion100 decks604 decks
13%synergy
Primal Vigor
15%inclusion89 decks604 decks
11%synergy
Utopia Sprawl
14%inclusion82 decks604 decks
7%synergy
Wilderness Reclamation
13%inclusion78 decks604 decks
4%synergy
Growing Rites of Itlimoc
13%inclusion77 decks604 decks
7%synergy
Ominous Seas
12%inclusion71 decks604 decks
7%synergy
Unnatural Growth
11%inclusion68 decks604 decks
8%synergy
Propaganda
10%inclusion63 decks604 decks
4%synergy
Mystic Remora
10%inclusion59 decks604 decks
-6%synergy
Kenrith's Transformation
10%inclusion58 decks604 decks
5%synergy
Khalni Heart Expedition
10%inclusion58 decks604 decks
5%synergy
Imprisoned in the Moon
9.1%inclusion55 decks604 decks
5%synergy
Paradox Haze
8.9%inclusion54 decks604 decks
9%synergy
Extravagant Replication
8.8%inclusion53 decks604 decks
6%synergy
Exploration
8.3%inclusion50 decks604 decks
-5%synergy
Verity Circle
7.5%inclusion45 decks604 decks
7%synergy
Quest for Ula's Temple
6.6%inclusion40 decks604 decks
4%synergy
Cryptolith Rite
6.5%inclusion39 decks604 decks
3%synergy
Reconnaissance Mission
5.6%inclusion34 decks604 decks
4%synergy
Asceticism
5.3%inclusion32 decks604 decks
2%synergy
Moonlit Meditation
5.2%inclusion4 decks77 decks
4%synergy
Battles
Invasion of Segovia
7.1%inclusion43 decks604 decks
6%synergy
Invasion of Zendikar
6.0%inclusion36 decks604 decks
4%synergy
Planeswalkers
Oko, Thief of Crowns
11%inclusion69 decks604 decks
4%synergy
Kiora, the Crashing Wave
10%inclusion59 decks604 decks
7%synergy
Kiora, Behemoth Beckoner
8.9%inclusion54 decks604 decks
2%synergy
Utility Lands
Reliquary Tower
51%inclusion311 decks604 decks
1%synergy
Temple of the False God
25%inclusion148 decks604 decks
9%synergy
Rogue's Passage
20%inclusion121 decks604 decks
-2%synergy
Mosswort Bridge
20%inclusion119 decks604 decks
2%synergy
Mystic Sanctuary
13%inclusion78 decks604 decks
0%synergy
Yavimaya, Cradle of Growth
10%inclusion58 decks604 decks
-13%synergy
Castle Garenbrig
8.9%inclusion54 decks604 decks
4%synergy
Lumbering Falls
8.8%inclusion53 decks604 decks
2%synergy
Alchemist's Refuge
8.4%inclusion51 decks604 decks
-9%synergy
Command Beacon
8.4%inclusion51 decks604 decks
4%synergy
Restless Vinestalk
8.3%inclusion50 decks604 decks
2%synergy
Three Tree City
7.7%inclusion37 decks478 decks
3%synergy
Castle Vantress
6.8%inclusion41 decks604 decks
0%synergy
Boseiju, Who Endures
6.6%inclusion40 decks604 decks
-16%synergy
Otawara, Soaring City
5.3%inclusion32 decks604 decks
-14%synergy
Mistrise Village
5.0%inclusion9 decks179 decks
-5%synergy
Mana Artifacts
Sol Ring
87%inclusion525 decks604 decks
6%synergy
Arcane Signet
72%inclusion432 decks604 decks
9%synergy
Simic Signet
48%inclusion290 decks604 decks
16%synergy
Thought Vessel
33%inclusion202 decks604 decks
13%synergy
Talisman of Curiosity
29%inclusion175 decks604 decks
8%synergy
Commander's Sphere
20%inclusion120 decks604 decks
11%synergy
Fellwar Stone
11%inclusion68 decks604 decks
2%synergy
Decanter of Endless Water
8.9%inclusion54 decks604 decks
4%synergy
Mind Stone
8.3%inclusion50 decks604 decks
4%synergy
Thran Dynamo
8.3%inclusion50 decks604 decks
6%synergy
Lands
Island
96%inclusion579 decks604 decks
0%synergy
Forest
96%inclusion578 decks604 decks
0%synergy
Command Tower
85%inclusion514 decks604 decks
0%synergy
Simic Growth Chamber
55%inclusion335 decks604 decks
7%synergy
Hinterland Harbor
54%inclusion327 decks604 decks
-5%synergy
Yavimaya Coast
50%inclusion301 decks604 decks
-3%synergy
Temple of Mystery
46%inclusion279 decks604 decks
8%synergy
Vineglimmer Snarl
42%inclusion251 decks604 decks
3%synergy
Dreamroot Cascade
39%inclusion237 decks604 decks
-2%synergy
Flooded Grove
37%inclusion224 decks604 decks
-3%synergy
Myriad Landscape
33%inclusion202 decks604 decks
11%synergy
Evolving Wilds
33%inclusion200 decks604 decks
8%synergy
Rejuvenating Springs
32%inclusion194 decks604 decks
-12%synergy
Thornwood Falls
30%inclusion183 decks604 decks
12%synergy
Exotic Orchard
27%inclusion165 decks604 decks
3%synergy
Tangled Islet
27%inclusion164 decks604 decks
11%synergy
Terramorphic Expanse
25%inclusion150 decks604 decks
5%synergy
Breeding Pool
22%inclusion135 decks604 decks
-23%synergy
Rimewood Falls
22%inclusion133 decks604 decks
12%synergy
Barkchannel Pathway
21%inclusion124 decks604 decks
0%synergy
Simic Guildgate
18%inclusion111 decks604 decks
8%synergy
Overflowing Basin
17%inclusion92 decks547 decks
-2%synergy
Waterlogged Grove
14%inclusion86 decks604 decks
-6%synergy
Path of Ancestry
14%inclusion84 decks604 decks
-4%synergy
Blighted Woodland
13%inclusion80 decks604 decks
5%synergy
Littjara Mirrorlake
11%inclusion65 decks604 decks
7%synergy
Hedge Maze
10%inclusion59 decks567 decks
-9%synergy
Misty Rainforest
10%inclusion62 decks604 decks
-21%synergy
Fabled Passage
10%inclusion61 decks604 decks
-4%synergy
Woodland Stream
9.4%inclusion57 decks604 decks
4%synergy
Botanical Sanctum
9.3%inclusion56 decks604 decks
-3%synergy
Bala Ged Recovery
9.1%inclusion55 decks604 decks
-1%synergy
Willowrush Verge
8.7%inclusion22 decks252 decks
-7%synergy
Quandrix Campus
7.9%inclusion48 decks604 decks
1%synergy
Glasspool Mimic
7.6%inclusion46 decks604 decks
3%synergy
Snow-Covered Island
6.8%inclusion41 decks604 decks
0%synergy
Snow-Covered Forest
6.6%inclusion40 decks604 decks
0%synergy
Sink into Stupor
6.2%inclusion31 decks502 decks
-5%synergy
Lush Oasis
5.6%inclusion30 decks531 decks
-1%synergy
Bridgeworks Battle
5.4%inclusion27 decks502 decks
1%synergy
Tanglepool Bridge
5.3%inclusion32 decks604 decks
1%synergy
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