Koma, Cosmos Serpent (Commander) - Budget Core

Koma, Cosmos Serpent
Rank #289
60decks
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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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Doc Ock's Tentacles
17%inclusion1 decks6 decks
17%synergy
High Synergy Cards
Whelming Wave
57%inclusion34 decks60 decks
45%synergy
Explore
60%inclusion36 decks60 decks
39%synergy
Garruk's Packleader
42%inclusion25 decks60 decks
39%synergy
Urban Evolution
47%inclusion28 decks60 decks
37%synergy
Slinn Voda, the Rising Deep
42%inclusion25 decks60 decks
35%synergy
Junk Winder
42%inclusion25 decks60 decks
35%synergy
Negate
58%inclusion35 decks60 decks
32%synergy
Coiling Oracle
45%inclusion27 decks60 decks
32%synergy
Eureka Moment
42%inclusion25 decks60 decks
31%synergy
Tatyova, Benthic Druid
60%inclusion36 decks60 decks
28%synergy
Top Cards
Growth Spiral
63%inclusion38 decks60 decks
19%synergy
Rampant Growth
63%inclusion38 decks60 decks
23%synergy
Cultivate
55%inclusion33 decks60 decks
8%synergy
Llanowar Elves
43%inclusion26 decks60 decks
16%synergy
Koma, World-Eater
41%inclusion16 decks39 decks
28%synergy
Arixmethes, Slumbering Isle
40%inclusion24 decks60 decks
27%synergy
Counterspell
38%inclusion23 decks60 decks
-12%synergy
Elvish Mystic
37%inclusion22 decks60 decks
12%synergy
Scourge of Fleets
35%inclusion21 decks60 decks
27%synergy
Murkfiend Liege
33%inclusion20 decks60 decks
18%synergy
Creatures
Troyan, Gutsy Explorer
30%inclusion18 decks60 decks
27%synergy
Reclamation Sage
30%inclusion18 decks60 decks
15%synergy
Stormtide Leviathan
28%inclusion17 decks60 decks
22%synergy
Rampaging Baloths
28%inclusion17 decks60 decks
11%synergy
Adrix and Nev, Twincasters
27%inclusion16 decks60 decks
18%synergy
Tromokratis
27%inclusion16 decks60 decks
21%synergy
Sakura-Tribe Elder
27%inclusion16 decks60 decks
7%synergy
Nadir Kraken
25%inclusion15 decks60 decks
21%synergy
Esix, Fractal Bloom
23%inclusion14 decks60 decks
19%synergy
Trygon Predator
22%inclusion13 decks60 decks
15%synergy
Octomancer
21%inclusion10 decks48 decks
16%synergy
Zimone, Quandrix Prodigy
20%inclusion12 decks60 decks
17%synergy
Reef Worm
18%inclusion11 decks60 decks
15%synergy
Xolatoyac, the Smiling Flood
17%inclusion10 decks60 decks
9%synergy
Hydroid Krasis
17%inclusion10 decks60 decks
9%synergy
Simic Sky Swallower
17%inclusion10 decks60 decks
12%synergy
Fyndhorn Elves
15%inclusion9 decks60 decks
-1%synergy
Archetype of Imagination
15%inclusion9 decks60 decks
11%synergy
Poison Dart Frog
15%inclusion9 decks60 decks
8%synergy
Mulldrifter
15%inclusion9 decks60 decks
9%synergy
Inga and Esika
15%inclusion9 decks60 decks
12%synergy
Kiora's Follower
13%inclusion8 decks60 decks
-2%synergy
Hullbreaker Horror
13%inclusion8 decks60 decks
-4%synergy
Farhaven Elf
12%inclusion7 decks60 decks
7%synergy
Moritte of the Frost
12%inclusion7 decks60 decks
10%synergy
Brinelin, the Moon Kraken
12%inclusion7 decks60 decks
7%synergy
Gretchen Titchwillow
12%inclusion7 decks60 decks
10%synergy
Starwinder
11%inclusion1 decks9 decks
4%synergy
Glacier Godmaw
11%inclusion1 decks9 decks
7%synergy
Eternal Witness
10%inclusion6 decks60 decks
-11%synergy
Quandrix Cultivator
10%inclusion6 decks60 decks
8%synergy
Kiora, Sovereign of the Deep
10%inclusion6 decks60 decks
8%synergy
Charix, the Raging Isle
10%inclusion6 decks60 decks
7%synergy
Verazol, the Split Current
10%inclusion6 decks60 decks
10%synergy
Lorthos, the Tidemaker
10%inclusion6 decks60 decks
7%synergy
Shipbreaker Kraken
10%inclusion6 decks60 decks
7%synergy
Imoti, Celebrant of Bounty
10%inclusion6 decks60 decks
6%synergy
Gyre Engineer
10%inclusion6 decks60 decks
7%synergy
Monstrosity of the Lake
10%inclusion6 decks60 decks
7%synergy
End-Raze Forerunners
10%inclusion6 decks60 decks
5%synergy
Inkwell Leviathan
10%inclusion6 decks60 decks
6%synergy
Llanowar Visionary
10%inclusion6 decks60 decks
9%synergy
Cryptic Serpent
8.3%inclusion5 decks60 decks
8%synergy
Reservoir Kraken
8.3%inclusion5 decks60 decks
7%synergy
Avenger of Zendikar
8.3%inclusion5 decks60 decks
-10%synergy
Yavimaya Elder
8.3%inclusion5 decks60 decks
6%synergy
Maraleaf Pixie
8.3%inclusion5 decks60 decks
2%synergy
Acidic Slime
8.3%inclusion5 decks60 decks
2%synergy
Arbor Elf
8.3%inclusion5 decks60 decks
2%synergy
Needlethorn Drake
8.3%inclusion5 decks60 decks
8%synergy
Instants
Snakeskin Veil
32%inclusion19 decks60 decks
26%synergy
Planar Genesis
31%inclusion15 decks49 decks
20%synergy
Return to Nature
30%inclusion18 decks60 decks
24%synergy
Return of the Wildspeaker
27%inclusion16 decks60 decks
16%synergy
Decisive Denial
27%inclusion16 decks60 decks
22%synergy
Simic Charm
25%inclusion15 decks60 decks
17%synergy
Aetherize
23%inclusion14 decks60 decks
12%synergy
Harrow
22%inclusion13 decks60 decks
10%synergy
Joint Exploration
20%inclusion12 decks60 decks
14%synergy
Disdainful Stroke
20%inclusion12 decks60 decks
18%synergy
Perplexing Test
18%inclusion11 decks60 decks
14%synergy
Double Major
18%inclusion11 decks60 decks
10%synergy
Reality Shift
18%inclusion11 decks60 decks
4%synergy
Beast Within
18%inclusion11 decks60 decks
-32%synergy
Fact or Fiction
17%inclusion10 decks60 decks
14%synergy
Plasm Capture
15%inclusion9 decks60 decks
11%synergy
Opt
15%inclusion9 decks60 decks
8%synergy
Cancel
15%inclusion9 decks60 decks
13%synergy
Brainstorm
13%inclusion8 decks60 decks
-1%synergy
Essence Scatter
12%inclusion7 decks60 decks
10%synergy
Mystic Confluence
12%inclusion7 decks60 decks
9%synergy
Voidslime
12%inclusion7 decks60 decks
7%synergy
You See a Guard Approach
10%inclusion6 decks60 decks
10%synergy
Resculpt
10%inclusion6 decks60 decks
4%synergy
Saw It Coming
10%inclusion6 decks60 decks
9%synergy
Rewind
10%inclusion6 decks60 decks
7%synergy
Naturalize
10%inclusion6 decks60 decks
8%synergy
Repulsive Mutation
8.5%inclusion5 decks59 decks
3%synergy
Broken Wings
8.3%inclusion5 decks60 decks
7%synergy
Roiling Regrowth
8.3%inclusion5 decks60 decks
4%synergy
Ranger's Guile
8.3%inclusion5 decks60 decks
8%synergy
Pull from Tomorrow
8.3%inclusion5 decks60 decks
6%synergy
Into the Roil
8.3%inclusion5 decks60 decks
7%synergy
Impulse
8.3%inclusion5 decks60 decks
8%synergy
Frantic Search
8.3%inclusion5 decks60 decks
3%synergy
Filter Out
8.3%inclusion5 decks60 decks
6%synergy
Tamiyo's Safekeeping
8.3%inclusion5 decks60 decks
3%synergy
Mana Leak
8.3%inclusion5 decks60 decks
6%synergy
Unwind
8.3%inclusion5 decks60 decks
6%synergy
Magic Damper
7.1%inclusion1 decks14 decks
6%synergy
Krosan Grip
6.7%inclusion4 decks60 decks
-2%synergy
Royal Treatment
6.7%inclusion4 decks60 decks
5%synergy
Gaea's Gift
6.7%inclusion4 decks60 decks
4%synergy
Dissolve
6.7%inclusion4 decks60 decks
5%synergy
Aetherspouts
6.7%inclusion4 decks60 decks
5%synergy
Thassa's Intervention
6.7%inclusion4 decks60 decks
6%synergy
Ice Out
6.7%inclusion4 decks60 decks
6%synergy
Incubation // Incongruity
6.7%inclusion4 decks60 decks
4%synergy
Spring // Mind
6.7%inclusion4 decks60 decks
6%synergy
Unsubstantiate
6.7%inclusion4 decks60 decks
6%synergy
Sorceries
Kodama's Reach
33%inclusion20 decks60 decks
-4%synergy
Harmonize
27%inclusion16 decks60 decks
21%synergy
Search for Tomorrow
25%inclusion15 decks60 decks
20%synergy
Curse of the Swine
25%inclusion15 decks60 decks
14%synergy
Explosive Vegetation
23%inclusion14 decks60 decks
18%synergy
Farseek
20%inclusion12 decks60 decks
-4%synergy
Migration Path
20%inclusion12 decks60 decks
17%synergy
Shamanic Revelation
18%inclusion11 decks60 decks
13%synergy
Ravenform
15%inclusion9 decks60 decks
10%synergy
Vastwood Surge
13%inclusion8 decks60 decks
12%synergy
Overrun
12%inclusion7 decks60 decks
9%synergy
Regrowth
12%inclusion7 decks60 decks
8%synergy
Broken Bond
12%inclusion7 decks60 decks
7%synergy
Distant Melody
12%inclusion7 decks60 decks
8%synergy
Doppelgang
10%inclusion6 decks59 decks
4%synergy
Treasure Cruise
10%inclusion6 decks60 decks
6%synergy
Nissa's Pilgrimage
10%inclusion6 decks60 decks
8%synergy
Divination
8.3%inclusion5 decks60 decks
8%synergy
Croaking Counterpart
8.3%inclusion5 decks60 decks
4%synergy
Unexpected Results
8.3%inclusion5 decks60 decks
7%synergy
Spitting Image
8.3%inclusion5 decks60 decks
6%synergy
Aggressive Biomancy
8.2%inclusion4 decks49 decks
3%synergy
Map the Frontier
7.4%inclusion4 decks54 decks
6%synergy
Skyshroud Claim
6.7%inclusion4 decks60 decks
-3%synergy
Nature's Lore
6.7%inclusion4 decks60 decks
-24%synergy
Preordain
6.7%inclusion4 decks60 decks
-2%synergy
Grow from the Ashes
6.7%inclusion4 decks60 decks
5%synergy
Aether Gale
6.7%inclusion4 decks60 decks
5%synergy
Overwhelming Stampede
6.7%inclusion4 decks60 decks
-5%synergy
Bridgeworks Battle
6.1%inclusion3 decks49 decks
1%synergy
Three Visits
5.0%inclusion3 decks60 decks
-18%synergy
Irenicus's Vile Duplication
5.0%inclusion3 decks60 decks
-1%synergy
Ezuri's Predation
5.0%inclusion3 decks60 decks
-3%synergy
Compulsive Research
5.0%inclusion3 decks60 decks
4%synergy
Green Sun's Twilight
5.0%inclusion3 decks60 decks
4%synergy
Ranger's Path
5.0%inclusion3 decks60 decks
4%synergy
Oversimplify
5.0%inclusion3 decks60 decks
1%synergy
Deep Analysis
5.0%inclusion3 decks60 decks
4%synergy
Circuitous Route
5.0%inclusion3 decks60 decks
3%synergy
Primal Might
5.0%inclusion3 decks60 decks
5%synergy
Quasiduplicate
5.0%inclusion3 decks60 decks
2%synergy
Utility Artifacts
Combine Chrysalis
30%inclusion18 decks60 decks
26%synergy
Idol of Oblivion
20%inclusion12 decks60 decks
16%synergy
Swiftfoot Boots
20%inclusion12 decks60 decks
-6%synergy
Wayfarer's Bauble
17%inclusion10 decks60 decks
15%synergy
Kefnet's Monument
12%inclusion7 decks60 decks
11%synergy
Bident of Thassa
10%inclusion6 decks60 decks
3%synergy
Symmetry Matrix
6.7%inclusion4 decks60 decks
7%synergy
Giant's Amulet
6.7%inclusion4 decks60 decks
6%synergy
Mirror Box
5.0%inclusion3 decks60 decks
1%synergy
Helm of the Host
5.0%inclusion3 decks60 decks
0%synergy
Blackblade Reforged
5.0%inclusion3 decks60 decks
2%synergy
Traveler's Amulet
5.0%inclusion3 decks60 decks
5%synergy
Enchantments
Garruk's Uprising
25%inclusion15 decks60 decks
9%synergy
Wild Growth
23%inclusion14 decks60 decks
15%synergy
Khalni Heart Expedition
23%inclusion14 decks60 decks
19%synergy
Elemental Bond
18%inclusion11 decks60 decks
13%synergy
Primal Empathy
17%inclusion10 decks60 decks
14%synergy
Bounty of the Luxa
13%inclusion8 decks60 decks
12%synergy
Wilderness Reclamation
12%inclusion7 decks60 decks
3%synergy
Sandwurm Convergence
12%inclusion7 decks60 decks
9%synergy
Ominous Seas
12%inclusion7 decks60 decks
7%synergy
Utopia Sprawl
12%inclusion7 decks60 decks
5%synergy
Imprisoned in the Moon
12%inclusion7 decks60 decks
8%synergy
Reconnaissance Mission
10%inclusion6 decks60 decks
8%synergy
Kenrith's Transformation
10%inclusion6 decks60 decks
5%synergy
Verity Circle
10%inclusion6 decks60 decks
9%synergy
Fertile Ground
10%inclusion6 decks60 decks
8%synergy
Eaten by Piranhas
8.3%inclusion5 decks60 decks
6%synergy
Aqueous Form
6.7%inclusion4 decks60 decks
2%synergy
Future Sight
6.7%inclusion4 decks60 decks
6%synergy
Snake Umbra
6.7%inclusion4 decks60 decks
5%synergy
Witness Protection
6.7%inclusion4 decks60 decks
4%synergy
Overgrowth
6.7%inclusion4 decks60 decks
6%synergy
Glacierwood Siege
5.3%inclusion1 decks19 decks
3%synergy
Spelunking
5.0%inclusion3 decks60 decks
-1%synergy
Unnatural Growth
5.0%inclusion3 decks60 decks
2%synergy
Stasis Field
5.0%inclusion3 decks60 decks
5%synergy
Propaganda
5.0%inclusion3 decks60 decks
-2%synergy
Glorious Sunrise
5.0%inclusion3 decks60 decks
4%synergy
Lignify
5.0%inclusion3 decks60 decks
3%synergy
New Horizons
5.0%inclusion3 decks60 decks
5%synergy
Battles
Invasion of Zendikar
12%inclusion7 decks60 decks
10%synergy
Invasion of Segovia
6.7%inclusion4 decks60 decks
6%synergy
Planeswalkers
Kiora, Behemoth Beckoner
10%inclusion6 decks60 decks
3%synergy
Vivien, Champion of the Wilds
5.0%inclusion3 decks60 decks
4%synergy
Kiora, the Crashing Wave
5.0%inclusion3 decks60 decks
2%synergy
Utility Lands
Temple of the False God
20%inclusion12 decks60 decks
4%synergy
Reliquary Tower
20%inclusion12 decks60 decks
-30%synergy
Mosswort Bridge
17%inclusion10 decks60 decks
-1%synergy
Rogue's Passage
13%inclusion8 decks60 decks
-9%synergy
Tranquil Thicket
10%inclusion6 decks60 decks
6%synergy
Lumbering Falls
8.3%inclusion5 decks60 decks
1%synergy
Hidden Cataract
8.3%inclusion5 decks60 decks
6%synergy
Mystic Sanctuary
6.7%inclusion4 decks60 decks
-6%synergy
Hidden Nursery
6.7%inclusion4 decks60 decks
4%synergy
Lonely Sandbar
6.7%inclusion4 decks60 decks
2%synergy
Restless Vinestalk
5.0%inclusion3 decks60 decks
-1%synergy
Memorial to Genius
5.0%inclusion3 decks60 decks
4%synergy
Jungle Basin
5.0%inclusion3 decks60 decks
3%synergy
Alchemist's Refuge
5.0%inclusion3 decks60 decks
-13%synergy
Mana Artifacts
Sol Ring
58%inclusion35 decks60 decks
-22%synergy
Arcane Signet
47%inclusion28 decks60 decks
-16%synergy
Simic Signet
47%inclusion28 decks60 decks
14%synergy
Commander's Sphere
25%inclusion15 decks60 decks
16%synergy
Talisman of Curiosity
25%inclusion15 decks60 decks
4%synergy
Moss Diamond
15%inclusion9 decks60 decks
14%synergy
Midnight Clock
15%inclusion9 decks60 decks
13%synergy
Thought Vessel
13%inclusion8 decks60 decks
-7%synergy
Sky Diamond
13%inclusion8 decks60 decks
12%synergy
Fellwar Stone
8.3%inclusion5 decks60 decks
-1%synergy
Simic Locket
8.3%inclusion5 decks60 decks
7%synergy
Simic Cluestone
6.7%inclusion4 decks60 decks
6%synergy
Mind Stone
6.7%inclusion4 decks60 decks
2%synergy
Decanter of Endless Water
5.0%inclusion3 decks60 decks
0%synergy
Replicating Ring
5.0%inclusion3 decks60 decks
3%synergy
Lands
Island
98%inclusion59 decks60 decks
3%synergy
Forest
98%inclusion59 decks60 decks
3%synergy
Command Tower
63%inclusion38 decks60 decks
-22%synergy
Simic Growth Chamber
55%inclusion33 decks60 decks
6%synergy
Temple of Mystery
43%inclusion26 decks60 decks
5%synergy
Thornwood Falls
43%inclusion26 decks60 decks
25%synergy
Evolving Wilds
42%inclusion25 decks60 decks
16%synergy
Hinterland Harbor
35%inclusion21 decks60 decks
-24%synergy
Simic Guildgate
33%inclusion20 decks60 decks
23%synergy
Vineglimmer Snarl
33%inclusion20 decks60 decks
-5%synergy
Terramorphic Expanse
30%inclusion18 decks60 decks
10%synergy
Myriad Landscape
30%inclusion18 decks60 decks
8%synergy
Yavimaya Coast
28%inclusion17 decks60 decks
-24%synergy
Tangled Islet
25%inclusion15 decks60 decks
8%synergy
Flooded Grove
23%inclusion14 decks60 decks
-17%synergy
Exotic Orchard
22%inclusion13 decks60 decks
-2%synergy
Rimewood Falls
18%inclusion11 decks60 decks
9%synergy
Overflowing Basin
18%inclusion10 decks57 decks
-2%synergy
Quandrix Campus
17%inclusion10 decks60 decks
10%synergy
Blighted Woodland
15%inclusion9 decks60 decks
7%synergy
Path of Ancestry
15%inclusion9 decks60 decks
-3%synergy
Lush Oasis
11%inclusion6 decks54 decks
5%synergy
Waterlogged Grove
10%inclusion6 decks60 decks
-11%synergy
Tanglepool Bridge
10%inclusion6 decks60 decks
6%synergy
Woodland Stream
8.3%inclusion5 decks60 decks
3%synergy
Littjara Mirrorlake
8.3%inclusion5 decks60 decks
4%synergy
Dreamroot Cascade
6.7%inclusion4 decks60 decks
-35%synergy
Opal Palace
6.7%inclusion4 decks60 decks
4%synergy
Bridgeworks Battle
6.1%inclusion3 decks49 decks
1%synergy
Tangled Florahedron
5.0%inclusion3 decks60 decks
3%synergy
Khalni Ambush
5.0%inclusion3 decks60 decks
3%synergy
Barkchannel Pathway
5.0%inclusion3 decks60 decks
-16%synergy
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