Koma, Cosmos Serpent (Commander) - Budget Core

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
59decks
As CommanderAs CardAverage DeckDecks
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All12345
Budget
Any$$$$
Background image for How To Play Sea Creatures Differently In Commander
Sikora
Nov 13, 2025
Sikora
How To Play Sea Creatures Differently In Commander
Sea creatures in Magic are basically as old as the game itself, but they've changed significantly in that time.
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Whelming Wave
56%inclusion33 decks59 decks
45%synergy
Explore
61%inclusion36 decks59 decks
41%synergy
Garruk's Packleader
42%inclusion25 decks59 decks
40%synergy
Urban Evolution
46%inclusion27 decks59 decks
36%synergy
Slinn Voda, the Rising Deep
41%inclusion24 decks59 decks
34%synergy
Junk Winder
41%inclusion24 decks59 decks
34%synergy
Negate
58%inclusion34 decks59 decks
32%synergy
Coiling Oracle
44%inclusion26 decks59 decks
31%synergy
Arixmethes, Slumbering Isle
44%inclusion26 decks59 decks
31%synergy
Tatyova, Benthic Druid
59%inclusion35 decks59 decks
28%synergy
Top Cards
Growth Spiral
64%inclusion38 decks59 decks
20%synergy
Rampant Growth
63%inclusion37 decks59 decks
22%synergy
Cultivate
53%inclusion31 decks59 decks
6%synergy
Llanowar Elves
42%inclusion25 decks59 decks
15%synergy
Elvish Mystic
39%inclusion23 decks59 decks
15%synergy
Koma, World-Eater
38%inclusion15 decks39 decks
25%synergy
Eureka Moment
37%inclusion22 decks59 decks
26%synergy
Counterspell
36%inclusion21 decks59 decks
-14%synergy
Kodama's Reach
34%inclusion20 decks59 decks
-2%synergy
Scourge of Fleets
34%inclusion20 decks59 decks
26%synergy
Creatures
Reclamation Sage
32%inclusion19 decks59 decks
18%synergy
Murkfiend Liege
32%inclusion19 decks59 decks
17%synergy
Sakura-Tribe Elder
29%inclusion17 decks59 decks
9%synergy
Stormtide Leviathan
29%inclusion17 decks59 decks
23%synergy
Rampaging Baloths
29%inclusion17 decks59 decks
12%synergy
Tromokratis
29%inclusion17 decks59 decks
24%synergy
Troyan, Gutsy Explorer
27%inclusion16 decks59 decks
24%synergy
Nadir Kraken
27%inclusion16 decks59 decks
23%synergy
Adrix and Nev, Twincasters
25%inclusion15 decks59 decks
17%synergy
Esix, Fractal Bloom
24%inclusion14 decks59 decks
20%synergy
Trygon Predator
24%inclusion14 decks59 decks
17%synergy
Octomancer
21%inclusion10 decks48 decks
16%synergy
Reef Worm
20%inclusion12 decks59 decks
17%synergy
Simic Sky Swallower
19%inclusion11 decks59 decks
14%synergy
Zimone, Quandrix Prodigy
17%inclusion10 decks59 decks
14%synergy
Xolatoyac, the Smiling Flood
17%inclusion10 decks59 decks
10%synergy
Fyndhorn Elves
15%inclusion9 decks59 decks
0%synergy
Hydroid Krasis
15%inclusion9 decks59 decks
7%synergy
Hullbreaker Horror
15%inclusion9 decks59 decks
-2%synergy
Kiora's Follower
14%inclusion8 decks59 decks
-1%synergy
Mulldrifter
14%inclusion8 decks59 decks
7%synergy
Poison Dart Frog
14%inclusion8 decks59 decks
7%synergy
Inga and Esika
14%inclusion8 decks59 decks
11%synergy
Archetype of Imagination
14%inclusion8 decks59 decks
9%synergy
Brinelin, the Moon Kraken
12%inclusion7 decks59 decks
8%synergy
Inkwell Leviathan
12%inclusion7 decks59 decks
8%synergy
Gyre Engineer
12%inclusion7 decks59 decks
9%synergy
Farhaven Elf
12%inclusion7 decks59 decks
7%synergy
End-Raze Forerunners
10%inclusion6 decks59 decks
5%synergy
Moritte of the Frost
10%inclusion6 decks59 decks
9%synergy
Kiora, Sovereign of the Deep
10%inclusion6 decks59 decks
8%synergy
Monstrosity of the Lake
10%inclusion6 decks59 decks
8%synergy
Gretchen Titchwillow
10%inclusion6 decks59 decks
8%synergy
Eternal Witness
10%inclusion6 decks59 decks
-11%synergy
Verazol, the Split Current
10%inclusion6 decks59 decks
10%synergy
Lorthos, the Tidemaker
10%inclusion6 decks59 decks
7%synergy
Shipbreaker Kraken
10%inclusion6 decks59 decks
7%synergy
Glacier Godmaw
10%inclusion1 decks10 decks
6%synergy
Starwinder
10%inclusion1 decks10 decks
3%synergy
Llanowar Visionary
8.5%inclusion5 decks59 decks
7%synergy
Cryptic Serpent
8.5%inclusion5 decks59 decks
8%synergy
Acidic Slime
8.5%inclusion5 decks59 decks
2%synergy
Avenger of Zendikar
8.5%inclusion5 decks59 decks
-9%synergy
Needlethorn Drake
8.5%inclusion5 decks59 decks
8%synergy
Quandrix Cultivator
8.5%inclusion5 decks59 decks
7%synergy
Biolume Egg
8.5%inclusion5 decks59 decks
8%synergy
Yavimaya Elder
8.5%inclusion5 decks59 decks
6%synergy
Charix, the Raging Isle
8.5%inclusion5 decks59 decks
5%synergy
Imoti, Celebrant of Bounty
8.5%inclusion5 decks59 decks
5%synergy
Sharktocrab
8.5%inclusion5 decks59 decks
7%synergy
Instants
Return to Nature
32%inclusion19 decks59 decks
27%synergy
Planar Genesis
31%inclusion15 decks49 decks
20%synergy
Snakeskin Veil
27%inclusion16 decks59 decks
21%synergy
Return of the Wildspeaker
25%inclusion15 decks59 decks
15%synergy
Decisive Denial
25%inclusion15 decks59 decks
20%synergy
Aetherize
24%inclusion14 decks59 decks
12%synergy
Simic Charm
24%inclusion14 decks59 decks
16%synergy
Harrow
22%inclusion13 decks59 decks
10%synergy
Reality Shift
20%inclusion12 decks59 decks
6%synergy
Beast Within
19%inclusion11 decks59 decks
-32%synergy
Perplexing Test
19%inclusion11 decks59 decks
14%synergy
Joint Exploration
19%inclusion11 decks59 decks
13%synergy
Disdainful Stroke
19%inclusion11 decks59 decks
17%synergy
Cancel
19%inclusion11 decks59 decks
17%synergy
Double Major
19%inclusion11 decks59 decks
10%synergy
Opt
17%inclusion10 decks59 decks
9%synergy
Fact or Fiction
17%inclusion10 decks59 decks
14%synergy
Plasm Capture
15%inclusion9 decks59 decks
12%synergy
Brainstorm
14%inclusion8 decks59 decks
-1%synergy
Voidslime
12%inclusion7 decks59 decks
7%synergy
Mystic Confluence
12%inclusion7 decks59 decks
9%synergy
Essence Scatter
10%inclusion6 decks59 decks
9%synergy
You See a Guard Approach
10%inclusion6 decks59 decks
10%synergy
Rewind
10%inclusion6 decks59 decks
7%synergy
Resculpt
10%inclusion6 decks59 decks
4%synergy
Impulse
10%inclusion6 decks59 decks
10%synergy
Broken Wings
8.5%inclusion5 decks59 decks
8%synergy
Repulsive Mutation
8.5%inclusion5 decks59 decks
3%synergy
Ranger's Guile
8.5%inclusion5 decks59 decks
8%synergy
Filter Out
8.5%inclusion5 decks59 decks
6%synergy
Pull from Tomorrow
8.5%inclusion5 decks59 decks
6%synergy
Naturalize
8.5%inclusion5 decks59 decks
7%synergy
Into the Roil
8.5%inclusion5 decks59 decks
7%synergy
Unsubstantiate
8.5%inclusion5 decks59 decks
8%synergy
Unwind
8.5%inclusion5 decks59 decks
6%synergy
Krosan Grip
8.5%inclusion5 decks59 decks
0%synergy
Tamiyo's Safekeeping
8.5%inclusion5 decks59 decks
3%synergy
Ice Out
8.5%inclusion5 decks59 decks
8%synergy
Saw It Coming
8.5%inclusion5 decks59 decks
7%synergy
Frantic Search
6.8%inclusion4 decks59 decks
1%synergy
Mana Leak
6.8%inclusion4 decks59 decks
4%synergy
Fog
6.8%inclusion4 decks59 decks
3%synergy
Incubation // Incongruity
6.8%inclusion4 decks59 decks
5%synergy
Unsummon
6.8%inclusion4 decks59 decks
6%synergy
Dissolve
6.8%inclusion4 decks59 decks
5%synergy
Thassa's Intervention
6.8%inclusion4 decks59 decks
6%synergy
Druid's Deliverance
6.8%inclusion4 decks59 decks
5%synergy
Magic Damper
6.7%inclusion1 decks15 decks
6%synergy
Auroral Procession
5.3%inclusion1 decks19 decks
2%synergy
Refute
5.1%inclusion2 decks39 decks
3%synergy
Sorceries
Curse of the Swine
27%inclusion16 decks59 decks
16%synergy
Explosive Vegetation
25%inclusion15 decks59 decks
20%synergy
Harmonize
24%inclusion14 decks59 decks
18%synergy
Search for Tomorrow
24%inclusion14 decks59 decks
19%synergy
Farseek
19%inclusion11 decks59 decks
-6%synergy
Migration Path
19%inclusion11 decks59 decks
15%synergy
Shamanic Revelation
17%inclusion10 decks59 decks
12%synergy
Ravenform
14%inclusion8 decks59 decks
9%synergy
Overrun
12%inclusion7 decks59 decks
10%synergy
Broken Bond
12%inclusion7 decks59 decks
7%synergy
Vastwood Surge
12%inclusion7 decks59 decks
11%synergy
Distant Melody
12%inclusion7 decks59 decks
9%synergy
Unexpected Results
10%inclusion6 decks59 decks
9%synergy
Treasure Cruise
10%inclusion6 decks59 decks
7%synergy
Regrowth
10%inclusion6 decks59 decks
6%synergy
Nissa's Pilgrimage
10%inclusion6 decks59 decks
9%synergy
Doppelgang
10%inclusion6 decks59 decks
4%synergy
Preordain
8.5%inclusion5 decks59 decks
0%synergy
Divination
8.5%inclusion5 decks59 decks
8%synergy
Spitting Image
8.5%inclusion5 decks59 decks
6%synergy
Overwhelming Stampede
8.5%inclusion5 decks59 decks
-4%synergy
Aggressive Biomancy
8.2%inclusion4 decks49 decks
3%synergy
Map the Frontier
7.4%inclusion4 decks54 decks
6%synergy
Circuitous Route
6.8%inclusion4 decks59 decks
5%synergy
Grow from the Ashes
6.8%inclusion4 decks59 decks
5%synergy
Nature's Lore
6.8%inclusion4 decks59 decks
-24%synergy
Croaking Counterpart
6.8%inclusion4 decks59 decks
2%synergy
Skyshroud Claim
6.8%inclusion4 decks59 decks
-2%synergy
Aether Gale
6.8%inclusion4 decks59 decks
5%synergy
Ezuri's Predation
6.8%inclusion4 decks59 decks
-1%synergy
Bridgeworks Battle
6.1%inclusion3 decks49 decks
1%synergy
Three Visits
5.1%inclusion3 decks59 decks
-18%synergy
Deep Analysis
5.1%inclusion3 decks59 decks
4%synergy
Irenicus's Vile Duplication
5.1%inclusion3 decks59 decks
-1%synergy
Bushwhack
5.1%inclusion3 decks59 decks
3%synergy
Oversimplify
5.1%inclusion3 decks59 decks
1%synergy
Green Sun's Twilight
5.1%inclusion3 decks59 decks
4%synergy
Ranger's Path
5.1%inclusion3 decks59 decks
4%synergy
Primal Might
5.1%inclusion3 decks59 decks
5%synergy
Quasiduplicate
5.1%inclusion3 decks59 decks
2%synergy
Compulsive Research
5.1%inclusion3 decks59 decks
4%synergy
Rite of Replication
5.1%inclusion3 decks59 decks
-2%synergy
Utility Artifacts
Combine Chrysalis
32%inclusion19 decks59 decks
28%synergy
Idol of Oblivion
22%inclusion13 decks59 decks
19%synergy
Swiftfoot Boots
19%inclusion11 decks59 decks
-7%synergy
Wayfarer's Bauble
17%inclusion10 decks59 decks
15%synergy
Bident of Thassa
14%inclusion8 decks59 decks
6%synergy
Doc Ock's Tentacles
13%inclusion1 decks8 decks
12%synergy
Kefnet's Monument
12%inclusion7 decks59 decks
11%synergy
Helm of the Host
6.8%inclusion4 decks59 decks
1%synergy
Symmetry Matrix
6.8%inclusion4 decks59 decks
7%synergy
Traveler's Amulet
5.1%inclusion3 decks59 decks
5%synergy
Blackblade Reforged
5.1%inclusion3 decks59 decks
2%synergy
Giant's Amulet
5.1%inclusion3 decks59 decks
5%synergy
Mirror Box
5.1%inclusion3 decks59 decks
2%synergy
Enchantments
Wild Growth
25%inclusion15 decks59 decks
17%synergy
Garruk's Uprising
24%inclusion14 decks59 decks
7%synergy
Khalni Heart Expedition
24%inclusion14 decks59 decks
20%synergy
Elemental Bond
19%inclusion11 decks59 decks
13%synergy
Primal Empathy
15%inclusion9 decks59 decks
13%synergy
Wilderness Reclamation
14%inclusion8 decks59 decks
5%synergy
Bounty of the Luxa
14%inclusion8 decks59 decks
12%synergy
Imprisoned in the Moon
12%inclusion7 decks59 decks
8%synergy
Utopia Sprawl
12%inclusion7 decks59 decks
5%synergy
Sandwurm Convergence
12%inclusion7 decks59 decks
9%synergy
Ominous Seas
12%inclusion7 decks59 decks
8%synergy
Fertile Ground
10%inclusion6 decks59 decks
8%synergy
Verity Circle
10%inclusion6 decks59 decks
10%synergy
Kenrith's Transformation
10%inclusion6 decks59 decks
6%synergy
Reconnaissance Mission
10%inclusion6 decks59 decks
8%synergy
Eaten by Piranhas
6.8%inclusion4 decks59 decks
5%synergy
Overgrowth
6.8%inclusion4 decks59 decks
6%synergy
Future Sight
6.8%inclusion4 decks59 decks
6%synergy
Glacierwood Siege
5.3%inclusion1 decks19 decks
3%synergy
Spelunking
5.1%inclusion3 decks59 decks
-1%synergy
Aqueous Form
5.1%inclusion3 decks59 decks
1%synergy
Lignify
5.1%inclusion3 decks59 decks
3%synergy
Snake Umbra
5.1%inclusion3 decks59 decks
3%synergy
Stasis Field
5.1%inclusion3 decks59 decks
5%synergy
Glorious Sunrise
5.1%inclusion3 decks59 decks
4%synergy
New Horizons
5.1%inclusion3 decks59 decks
5%synergy
Witness Protection
5.1%inclusion3 decks59 decks
2%synergy
Unnatural Growth
5.1%inclusion3 decks59 decks
2%synergy
Battles
Invasion of Zendikar
12%inclusion7 decks59 decks
10%synergy
Invasion of Segovia
6.8%inclusion4 decks59 decks
6%synergy
Planeswalkers
Kiora, Behemoth Beckoner
10%inclusion6 decks59 decks
4%synergy
Vivien, Champion of the Wilds
5.1%inclusion3 decks59 decks
4%synergy
Kiora, the Crashing Wave
5.1%inclusion3 decks59 decks
2%synergy
Utility Lands
Reliquary Tower
22%inclusion13 decks59 decks
-28%synergy
Mosswort Bridge
19%inclusion11 decks59 decks
1%synergy
Temple of the False God
17%inclusion10 decks59 decks
1%synergy
Rogue's Passage
14%inclusion8 decks59 decks
-8%synergy
Tranquil Thicket
10%inclusion6 decks59 decks
6%synergy
Hidden Cataract
6.8%inclusion4 decks59 decks
4%synergy
Lumbering Falls
6.8%inclusion4 decks59 decks
0%synergy
Lonely Sandbar
6.8%inclusion4 decks59 decks
3%synergy
Hidden Nursery
5.1%inclusion3 decks59 decks
2%synergy
Alchemist's Refuge
5.1%inclusion3 decks59 decks
-12%synergy
Mystic Sanctuary
5.1%inclusion3 decks59 decks
-8%synergy
Restless Vinestalk
5.1%inclusion3 decks59 decks
-1%synergy
Memorial to Genius
5.1%inclusion3 decks59 decks
4%synergy
Jungle Basin
5.1%inclusion3 decks59 decks
3%synergy
Mana Artifacts
Sol Ring
59%inclusion35 decks59 decks
-21%synergy
Arcane Signet
49%inclusion29 decks59 decks
-14%synergy
Simic Signet
44%inclusion26 decks59 decks
12%synergy
Talisman of Curiosity
25%inclusion15 decks59 decks
4%synergy
Commander's Sphere
24%inclusion14 decks59 decks
15%synergy
Thought Vessel
17%inclusion10 decks59 decks
-3%synergy
Midnight Clock
15%inclusion9 decks59 decks
13%synergy
Moss Diamond
12%inclusion7 decks59 decks
11%synergy
Sky Diamond
10%inclusion6 decks59 decks
9%synergy
Simic Locket
8.5%inclusion5 decks59 decks
7%synergy
Fellwar Stone
8.5%inclusion5 decks59 decks
-1%synergy
Mind Stone
8.5%inclusion5 decks59 decks
4%synergy
Decanter of Endless Water
6.8%inclusion4 decks59 decks
2%synergy
Simic Cluestone
6.8%inclusion4 decks59 decks
6%synergy
Replicating Ring
5.1%inclusion3 decks59 decks
3%synergy
Thran Dynamo
5.1%inclusion3 decks59 decks
2%synergy
Lands
Forest
98%inclusion58 decks59 decks
3%synergy
Island
98%inclusion58 decks59 decks
3%synergy
Command Tower
63%inclusion37 decks59 decks
-23%synergy
Simic Growth Chamber
54%inclusion32 decks59 decks
6%synergy
Temple of Mystery
44%inclusion26 decks59 decks
6%synergy
Thornwood Falls
42%inclusion25 decks59 decks
25%synergy
Evolving Wilds
39%inclusion23 decks59 decks
14%synergy
Hinterland Harbor
36%inclusion21 decks59 decks
-24%synergy
Vineglimmer Snarl
36%inclusion21 decks59 decks
-3%synergy
Simic Guildgate
32%inclusion19 decks59 decks
22%synergy
Yavimaya Coast
31%inclusion18 decks59 decks
-22%synergy
Myriad Landscape
27%inclusion16 decks59 decks
5%synergy
Terramorphic Expanse
25%inclusion15 decks59 decks
6%synergy
Tangled Islet
25%inclusion15 decks59 decks
9%synergy
Exotic Orchard
22%inclusion13 decks59 decks
-2%synergy
Flooded Grove
22%inclusion13 decks59 decks
-19%synergy
Overflowing Basin
18%inclusion10 decks57 decks
-2%synergy
Rimewood Falls
15%inclusion9 decks59 decks
6%synergy
Path of Ancestry
14%inclusion8 decks59 decks
-4%synergy
Blighted Woodland
14%inclusion8 decks59 decks
6%synergy
Quandrix Campus
14%inclusion8 decks59 decks
7%synergy
Lush Oasis
11%inclusion6 decks54 decks
5%synergy
Waterlogged Grove
10%inclusion6 decks59 decks
-10%synergy
Woodland Stream
8.5%inclusion5 decks59 decks
3%synergy
Bridgeworks Battle
6.1%inclusion3 decks49 decks
1%synergy
Opal Palace
5.1%inclusion3 decks59 decks
3%synergy
Littjara Mirrorlake
5.1%inclusion3 decks59 decks
1%synergy
Tangled Florahedron
5.1%inclusion3 decks59 decks
4%synergy
Tanglepool Bridge
5.1%inclusion3 decks59 decks
0%synergy
Dreamroot Cascade
5.1%inclusion3 decks59 decks
-37%synergy
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