Koma, Cosmos Serpent (Commander)

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #307
6,772decks
As CommanderAs CardAverage DeckDecks
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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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Sodden Verdure
9.0%inclusion37 decks411 decks
3%synergy
Harmonized Crescendo
4.9%inclusion21 decks428 decks
3%synergy
Tam, Mindful First-Year
3.8%inclusion15 decks398 decks
3%synergy
Springleaf Parade
3.2%inclusion13 decks411 decks
2%synergy
Mirrorform
2.6%inclusion11 decks428 decks
1%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion5.15K decks6.77K decks
68%synergy
Elemental Bond
68%inclusion4.59K decks6.77K decks
62%synergy
Whelming Wave
73%inclusion4.93K decks6.77K decks
62%synergy
Spark Double
63%inclusion4.28K decks6.77K decks
54%synergy
Koma, World-Eater
65%inclusion3.30K decks5.07K decks
52%synergy
Junk Winder
57%inclusion3.86K decks6.77K decks
50%synergy
Parallel Lives
55%inclusion3.73K decks6.77K decks
49%synergy
Serpent of Yawning Depths
54%inclusion3.69K decks6.77K decks
48%synergy
Irenicus's Vile Duplication
52%inclusion3.54K decks6.77K decks
46%synergy
Sakashima of a Thousand Faces
50%inclusion3.36K decks6.77K decks
45%synergy
Top Cards
Cultivate
78%inclusion5.28K decks6.77K decks
31%synergy
Counterspell
74%inclusion5K decks6.77K decks
24%synergy
Kodama's Reach
70%inclusion4.75K decks6.77K decks
34%synergy
Rampant Growth
69%inclusion4.66K decks6.77K decks
28%synergy
Beast Within
61%inclusion4.14K decks6.77K decks
12%synergy
Nature's Lore
58%inclusion3.94K decks6.77K decks
28%synergy
Growth Spiral
56%inclusion3.81K decks6.77K decks
12%synergy
Farseek
54%inclusion3.67K decks6.77K decks
29%synergy
Heroic Intervention
54%inclusion3.62K decks6.77K decks
23%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion3.59K decks6.77K decks
36%synergy
Game Changers
Cyclonic Rift
44%inclusion2.96K decks6.77K decks
18%synergy
Rhystic Study
40%inclusion2.68K decks6.77K decks
18%synergy
Fierce Guardianship
32%inclusion2.16K decks6.77K decks
15%synergy
Seedborn Muse
29%inclusion1.94K decks6.77K decks
13%synergy
Worldly Tutor
22%inclusion1.52K decks6.77K decks
7%synergy
Consecrated Sphinx
20%inclusion1.32K decks6.77K decks
11%synergy
Mystical Tutor
16%inclusion1.10K decks6.77K decks
7%synergy
Force of Will
14%inclusion927 decks6.77K decks
4%synergy
Ancient Tomb
13%inclusion878 decks6.77K decks
4%synergy
Gaea's Cradle
10%inclusion691 decks6.77K decks
3%synergy
Creatures
Llanowar Elves
50%inclusion3.35K decks6.77K decks
21%synergy
Spawning Kraken
47%inclusion3.18K decks6.77K decks
40%synergy
Birds of Paradise
46%inclusion3.12K decks6.77K decks
18%synergy
Arixmethes, Slumbering Isle
43%inclusion2.90K decks6.77K decks
29%synergy
Sakura-Tribe Elder
40%inclusion2.68K decks6.77K decks
20%synergy
Elvish Mystic
39%inclusion2.62K decks6.77K decks
15%synergy
Sakashima the Impostor
38%inclusion2.61K decks6.77K decks
36%synergy
Tatyova, Benthic Druid
38%inclusion2.57K decks6.77K decks
7%synergy
Murkfiend Liege
35%inclusion2.40K decks6.77K decks
21%synergy
Craterhoof Behemoth
33%inclusion2.24K decks6.77K decks
23%synergy
Garruk's Packleader
33%inclusion2.22K decks6.77K decks
31%synergy
Hullbreaker Horror
30%inclusion2.05K decks6.77K decks
12%synergy
Ohran Frostfang
29%inclusion1.99K decks6.77K decks
26%synergy
Summon: Leviathan
29%inclusion883 decks3K decks
22%synergy
Eternal Witness
29%inclusion1.95K decks6.77K decks
8%synergy
Fyndhorn Elves
28%inclusion1.88K decks6.77K decks
12%synergy
Roaming Throne
27%inclusion1.86K decks6.77K decks
20%synergy
Enduring Vitality
25%inclusion1.39K decks5.50K decks
18%synergy
Slinn Voda, the Rising Deep
25%inclusion1.70K decks6.77K decks
19%synergy
Octomancer
25%inclusion1.42K decks5.79K decks
20%synergy
Esix, Fractal Bloom
24%inclusion1.65K decks6.77K decks
20%synergy
Archetype of Imagination
23%inclusion1.53K decks6.77K decks
18%synergy
Coiling Oracle
21%inclusion1.40K decks6.77K decks
8%synergy
Fanatic of Rhonas
19%inclusion1.18K decks6.08K decks
14%synergy
The Unagi of Kyoshi Island
16%inclusion211 decks1.28K decks
11%synergy
Scourge of Fleets
16%inclusion1.09K decks6.77K decks
8%synergy
Xolatoyac, the Smiling Flood
14%inclusion977 decks6.77K decks
7%synergy
Curiosity Crafter
14%inclusion974 decks6.77K decks
11%synergy
Scute Swarm
14%inclusion970 decks6.77K decks
-6%synergy
Starwinder
14%inclusion338 decks2.36K decks
8%synergy
Reclamation Sage
14%inclusion967 decks6.77K decks
0%synergy
Nezahal, Primal Tide
14%inclusion966 decks6.77K decks
3%synergy
Chameleon, Master of Disguise
14%inclusion259 decks1.87K decks
11%synergy
Delighted Halfling
13%inclusion906 decks6.77K decks
2%synergy
Nadir Kraken
13%inclusion895 decks6.77K decks
9%synergy
Toski, Bearer of Secrets
13%inclusion860 decks6.77K decks
9%synergy
Enduring Curiosity
13%inclusion702 decks5.56K decks
9%synergy
Avenger of Zendikar
12%inclusion845 decks6.77K decks
-5%synergy
Azusa, Lost but Seeking
12%inclusion828 decks6.77K decks
-2%synergy
Stormtide Leviathan
12%inclusion795 decks6.77K decks
6%synergy
Troyan, Gutsy Explorer
11%inclusion772 decks6.77K decks
8%synergy
Rampaging Baloths
11%inclusion747 decks6.77K decks
-6%synergy
Saryth, the Viper's Fang
11%inclusion723 decks6.77K decks
9%synergy
Lotus Cobra
10%inclusion667 decks6.77K decks
-4%synergy
Uro, Titan of Nature's Wrath
10%inclusion667 decks6.77K decks
0%synergy
Progenitor Mimic
10%inclusion654 decks6.77K decks
5%synergy
Circle of Dreams Druid
9.4%inclusion635 decks6.77K decks
7%synergy
Clever Impersonator
9.1%inclusion618 decks6.77K decks
4%synergy
Inga and Esika
8.9%inclusion603 decks6.77K decks
6%synergy
Kiora, Sovereign of the Deep
8.9%inclusion603 decks6.77K decks
7%synergy
Instants
Negate
47%inclusion3.17K decks6.77K decks
21%synergy
Double Major
47%inclusion3.16K decks6.77K decks
38%synergy
Pongify
40%inclusion2.69K decks6.77K decks
15%synergy
Arcane Denial
37%inclusion2.53K decks6.77K decks
15%synergy
An Offer You Can't Refuse
37%inclusion2.52K decks6.77K decks
14%synergy
Second Harvest
37%inclusion2.50K decks6.77K decks
31%synergy
Mana Drain
35%inclusion2.36K decks6.77K decks
19%synergy
Swan Song
32%inclusion2.17K decks6.77K decks
13%synergy
Return of the Wildspeaker
31%inclusion2.13K decks6.77K decks
21%synergy
Rapid Hybridization
31%inclusion2.09K decks6.77K decks
5%synergy
Krosan Grip
23%inclusion1.54K decks6.77K decks
15%synergy
Simic Charm
18%inclusion1.25K decks6.77K decks
11%synergy
Reality Shift
18%inclusion1.22K decks6.77K decks
3%synergy
Nature's Claim
16%inclusion1.11K decks6.77K decks
7%synergy
Brainstorm
16%inclusion1.07K decks6.77K decks
1%synergy
Planar Genesis
15%inclusion915 decks6.06K decks
4%synergy
Harrow
14%inclusion980 decks6.77K decks
3%synergy
Tamiyo's Safekeeping
13%inclusion863 decks6.77K decks
7%synergy
Voidslime
12%inclusion846 decks6.77K decks
7%synergy
Aetherize
12%inclusion839 decks6.77K decks
0%synergy
Return to Nature
12%inclusion826 decks6.77K decks
7%synergy
Eureka Moment
12%inclusion806 decks6.77K decks
1%synergy
Snakeskin Veil
12%inclusion795 decks6.77K decks
6%synergy
Sink into Stupor
11%inclusion687 decks6.08K decks
0%synergy
Force of Negation
11%inclusion763 decks6.77K decks
3%synergy
Plasm Capture
11%inclusion738 decks6.77K decks
8%synergy
Mystic Reflection
11%inclusion718 decks6.77K decks
8%synergy
Chord of Calling
10%inclusion680 decks6.77K decks
2%synergy
Pact of Negation
8.8%inclusion595 decks6.77K decks
1%synergy
Entish Restoration
8.2%inclusion556 decks6.77K decks
-1%synergy
Archdruid's Charm
7.9%inclusion535 decks6.77K decks
2%synergy
Stubborn Denial
7.9%inclusion534 decks6.77K decks
5%synergy
Perplexing Test
7.8%inclusion527 decks6.77K decks
3%synergy
Resculpt
7.5%inclusion508 decks6.77K decks
2%synergy
Decisive Denial
7.4%inclusion500 decks6.77K decks
2%synergy
Disallow
7.4%inclusion499 decks6.77K decks
6%synergy
Noxious Revival
7.3%inclusion495 decks6.77K decks
1%synergy
Sublime Epiphany
7.0%inclusion476 decks6.77K decks
5%synergy
Tyvar's Stand
6.3%inclusion424 decks6.77K decks
4%synergy
Narset's Reversal
6.2%inclusion419 decks6.77K decks
5%synergy
Strix Serenade
6.1%inclusion369 decks6.08K decks
2%synergy
Force of Vigor
6.0%inclusion405 decks6.77K decks
1%synergy
Collective Resistance
5.5%inclusion337 decks6.08K decks
2%synergy
Lazotep Plating
5.4%inclusion368 decks6.77K decks
5%synergy
Auroral Procession
5.4%inclusion192 decks3.57K decks
2%synergy
Joint Exploration
5.3%inclusion360 decks6.77K decks
0%synergy
Sorceries
Three Visits
49%inclusion3.29K decks6.77K decks
25%synergy
Skyshroud Claim
38%inclusion2.59K decks6.77K decks
29%synergy
Explore
28%inclusion1.90K decks6.77K decks
8%synergy
Quantum Misalignment
27%inclusion1.84K decks6.77K decks
24%synergy
Overwhelming Stampede
24%inclusion1.63K decks6.77K decks
12%synergy
Rite of Replication
17%inclusion1.15K decks6.77K decks
10%synergy
Shamanic Revelation
16%inclusion1.06K decks6.77K decks
11%synergy
Migration Path
15%inclusion1.02K decks6.77K decks
12%synergy
Urban Evolution
14%inclusion953 decks6.77K decks
5%synergy
Rishkar's Expertise
14%inclusion948 decks6.77K decks
6%synergy
Finale of Devastation
13%inclusion855 decks6.77K decks
1%synergy
Triumph of the Hordes
12%inclusion840 decks6.77K decks
9%synergy
Distant Melody
12%inclusion821 decks6.77K decks
9%synergy
Explosive Vegetation
12%inclusion820 decks6.77K decks
6%synergy
Bala Ged Recovery
12%inclusion817 decks6.77K decks
2%synergy
Harmonize
10%inclusion702 decks6.77K decks
5%synergy
Shared Roots
9.4%inclusion118 decks1.26K decks
6%synergy
Curse of the Swine
8.6%inclusion583 decks6.77K decks
-2%synergy
Ponder
8.3%inclusion561 decks6.77K decks
1%synergy
Search for Tomorrow
8.2%inclusion556 decks6.77K decks
4%synergy
Regrowth
7.4%inclusion504 decks6.77K decks
4%synergy
Doppelgang
7.2%inclusion488 decks6.77K decks
1%synergy
Sea Gate Restoration
7.1%inclusion481 decks6.77K decks
2%synergy
Green Sun's Zenith
6.7%inclusion455 decks6.77K decks
-2%synergy
Ravenform
6.6%inclusion449 decks6.77K decks
2%synergy
Windfall
6.1%inclusion414 decks6.77K decks
2%synergy
Preposterous Proportions
5.9%inclusion296 decks5.03K decks
5%synergy
Ezuri's Predation
5.8%inclusion390 decks6.77K decks
-2%synergy
Preordain
5.4%inclusion368 decks6.77K decks
-3%synergy
Ember Island Production
5.2%inclusion65 decks1.24K decks
4%synergy
Broken Bond
5.2%inclusion351 decks6.77K decks
0%synergy
Quasiduplicate
5.1%inclusion344 decks6.77K decks
2%synergy
Utility Artifacts
Swiftfoot Boots
44%inclusion2.99K decks6.77K decks
19%synergy
Helm of the Host
43%inclusion2.89K decks6.77K decks
37%synergy
Lightning Greaves
41%inclusion2.79K decks6.77K decks
19%synergy
Combine Chrysalis
26%inclusion1.74K decks6.77K decks
21%synergy
Mirror Box
17%inclusion1.18K decks6.77K decks
14%synergy
Emerald Medallion
13%inclusion898 decks6.77K decks
10%synergy
The Great Henge
12%inclusion798 decks6.77K decks
3%synergy
Idol of Oblivion
11%inclusion753 decks6.77K decks
8%synergy
Sapphire Medallion
11%inclusion715 decks6.77K decks
7%synergy
Eldrazi Monument
10%inclusion652 decks6.77K decks
9%synergy
Bident of Thassa
9.3%inclusion628 decks6.77K decks
2%synergy
Coat of Arms
7.4%inclusion501 decks6.77K decks
6%synergy
The One Ring
7.1%inclusion482 decks6.77K decks
-1%synergy
Banner of Kinship
5.6%inclusion285 decks5.06K decks
4%synergy
Enchantments
Doubling Season
49%inclusion3.33K decks6.77K decks
40%synergy
Tribute to the World Tree
44%inclusion2.97K decks6.77K decks
38%synergy
Kindred Discovery
31%inclusion2.12K decks6.77K decks
22%synergy
Mystic Remora
28%inclusion1.86K decks6.77K decks
12%synergy
Primal Vigor
19%inclusion1.26K decks6.77K decks
16%synergy
Garruk's Uprising
19%inclusion1.26K decks6.77K decks
2%synergy
Growing Rites of Itlimoc
17%inclusion1.18K decks6.77K decks
12%synergy
Wild Growth
16%inclusion1.05K decks6.77K decks
7%synergy
Sylvan Library
15%inclusion1.01K decks6.77K decks
6%synergy
Beastmaster Ascension
15%inclusion1K decks6.77K decks
12%synergy
Cryptolith Rite
15%inclusion1K decks6.77K decks
12%synergy
Exploration
15%inclusion988 decks6.77K decks
1%synergy
Utopia Sprawl
13%inclusion891 decks6.77K decks
7%synergy
Paradox Haze
12%inclusion804 decks6.77K decks
12%synergy
Propaganda
11%inclusion769 decks6.77K decks
5%synergy
Wilderness Reclamation
10%inclusion683 decks6.77K decks
1%synergy
Unnatural Growth
10%inclusion656 decks6.77K decks
6%synergy
Impostor Syndrome
9.5%inclusion178 decks1.88K decks
8%synergy
Defense of the Heart
8.9%inclusion604 decks6.77K decks
7%synergy
Moonlit Meditation
8.1%inclusion192 decks2.37K decks
7%synergy
Extravagant Replication
8.0%inclusion543 decks6.77K decks
6%synergy
Burgeoning
7.7%inclusion524 decks6.77K decks
1%synergy
Imprisoned in the Moon
7.6%inclusion516 decks6.77K decks
3%synergy
Asceticism
7.1%inclusion479 decks6.77K decks
4%synergy
Kenrith's Transformation
7.0%inclusion473 decks6.77K decks
3%synergy
Ominous Seas
6.6%inclusion444 decks6.77K decks
2%synergy
Verity Circle
5.4%inclusion363 decks6.77K decks
5%synergy
Dismiss into Dream
5.1%inclusion347 decks6.77K decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion1.42K decks6.77K decks
14%synergy
Kiora, the Crashing Wave
7.9%inclusion532 decks6.77K decks
5%synergy
Utility Lands
Reliquary Tower
61%inclusion4.12K decks6.77K decks
11%synergy
Boseiju, Who Endures
26%inclusion1.74K decks6.77K decks
3%synergy
Yavimaya, Cradle of Growth
25%inclusion1.66K decks6.77K decks
2%synergy
Otawara, Soaring City
21%inclusion1.42K decks6.77K decks
2%synergy
Temple of the False God
20%inclusion1.34K decks6.77K decks
4%synergy
Command Beacon
18%inclusion1.23K decks6.77K decks
14%synergy
Mosswort Bridge
17%inclusion1.13K decks6.77K decks
-1%synergy
Three Tree City
16%inclusion946 decks5.83K decks
11%synergy
Rogue's Passage
15%inclusion1.02K decks6.77K decks
-7%synergy
Mystic Sanctuary
14%inclusion958 decks6.77K decks
2%synergy
Castle Garenbrig
13%inclusion888 decks6.77K decks
9%synergy
Mistrise Village
13%inclusion460 decks3.57K decks
2%synergy
Alchemist's Refuge
12%inclusion824 decks6.77K decks
-5%synergy
Evendo, Waking Haven
12%inclusion290 decks2.42K decks
7%synergy
Castle Vantress
5.7%inclusion387 decks6.77K decks
-1%synergy
Restless Vinestalk
5.5%inclusion370 decks6.77K decks
0%synergy
Lumbering Falls
5.1%inclusion345 decks6.77K decks
-2%synergy
Mana Artifacts
Sol Ring
92%inclusion6.21K decks6.77K decks
11%synergy
Arcane Signet
78%inclusion5.27K decks6.77K decks
15%synergy
Simic Signet
43%inclusion2.94K decks6.77K decks
12%synergy
Thought Vessel
39%inclusion2.64K decks6.77K decks
19%synergy
Talisman of Curiosity
33%inclusion2.26K decks6.77K decks
12%synergy
Commander's Sphere
11%inclusion766 decks6.77K decks
3%synergy
Fellwar Stone
11%inclusion764 decks6.77K decks
2%synergy
Decanter of Endless Water
7.2%inclusion485 decks6.77K decks
2%synergy
Mana Vault
7.0%inclusion474 decks6.77K decks
1%synergy
Thran Dynamo
6.9%inclusion464 decks6.77K decks
4%synergy
Mind Stone
5.9%inclusion402 decks6.77K decks
2%synergy
Lands
Forest
94%inclusion6.39K decks6.77K decks
-1%synergy
Island
94%inclusion6.39K decks6.77K decks
-1%synergy
Command Tower
87%inclusion5.87K decks6.77K decks
1%synergy
Hinterland Harbor
66%inclusion4.46K decks6.77K decks
6%synergy
Breeding Pool
56%inclusion3.77K decks6.77K decks
9%synergy
Yavimaya Coast
55%inclusion3.71K decks6.77K decks
2%synergy
Rejuvenating Springs
54%inclusion3.69K decks6.77K decks
11%synergy
Dreamroot Cascade
50%inclusion3.39K decks6.77K decks
8%synergy
Simic Growth Chamber
49%inclusion3.32K decks6.77K decks
1%synergy
Flooded Grove
45%inclusion3.04K decks6.77K decks
4%synergy
Temple of Mystery
37%inclusion2.52K decks6.77K decks
-1%synergy
Misty Rainforest
37%inclusion2.47K decks6.77K decks
5%synergy
Vineglimmer Snarl
36%inclusion2.45K decks6.77K decks
-2%synergy
Barkchannel Pathway
35%inclusion2.37K decks6.77K decks
15%synergy
Myriad Landscape
26%inclusion1.77K decks6.77K decks
4%synergy
Exotic Orchard
25%inclusion1.70K decks6.77K decks
1%synergy
Evolving Wilds
23%inclusion1.53K decks6.77K decks
-2%synergy
Waterlogged Grove
22%inclusion1.47K decks6.77K decks
1%synergy
Thornwood Falls
20%inclusion1.35K decks6.77K decks
2%synergy
Hedge Maze
20%inclusion1.35K decks6.77K decks
0%synergy
Tangled Islet
20%inclusion1.32K decks6.77K decks
3%synergy
Willowrush Verge
19%inclusion812 decks4.25K decks
2%synergy
Fabled Passage
17%inclusion1.16K decks6.77K decks
3%synergy
Rimewood Falls
17%inclusion1.16K decks6.77K decks
8%synergy
Terramorphic Expanse
16%inclusion1.07K decks6.77K decks
-4%synergy
Tropical Island
15%inclusion1.02K decks6.77K decks
1%synergy
Overflowing Basin
15%inclusion995 decks6.61K decks
-4%synergy
Botanical Sanctum
13%inclusion907 decks6.77K decks
1%synergy
Bala Ged Recovery
12%inclusion817 decks6.77K decks
2%synergy
Sink into Stupor
11%inclusion687 decks6.08K decks
0%synergy
Path of Ancestry
10%inclusion689 decks6.77K decks
-7%synergy
Simic Guildgate
10%inclusion683 decks6.77K decks
0%synergy
Snow-Covered Forest
9.3%inclusion630 decks6.77K decks
3%synergy
Snow-Covered Island
9.3%inclusion629 decks6.77K decks
3%synergy
Prismatic Vista
9.2%inclusion620 decks6.77K decks
2%synergy
Glasspool Mimic
8.6%inclusion585 decks6.77K decks
4%synergy
Blighted Woodland
8.0%inclusion544 decks6.77K decks
1%synergy
Windswept Heath
7.9%inclusion536 decks6.77K decks
-3%synergy
Flooded Strand
7.9%inclusion534 decks6.77K decks
-3%synergy
Verdant Catacombs
7.5%inclusion510 decks6.77K decks
-2%synergy
Polluted Delta
7.2%inclusion490 decks6.77K decks
-3%synergy
Littjara Mirrorlake
7.2%inclusion485 decks6.77K decks
3%synergy
Sea Gate Restoration
7.1%inclusion481 decks6.77K decks
2%synergy
Scalding Tarn
6.8%inclusion460 decks6.77K decks
-3%synergy
Wooded Foothills
6.4%inclusion435 decks6.77K decks
-3%synergy
Woodland Stream
5.9%inclusion402 decks6.77K decks
1%synergy
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Commander SpellbookFABRECSpellvoid
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