Koma, Cosmos Serpent (Commander) - Expensive Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #297
16decks
As CommanderAs CardAverage DeckDecks
Bracket
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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Parallel Lives
94%inclusion15 decks16 decks
88%synergy
Sakashima of a Thousand Faces
88%inclusion14 decks16 decks
82%synergy
Mana Drain
94%inclusion15 decks16 decks
78%synergy
Doubling Season
88%inclusion14 decks16 decks
78%synergy
Spark Double
88%inclusion14 decks16 decks
78%synergy
Boseiju, Who Endures
94%inclusion15 decks16 decks
72%synergy
Whelming Wave
81%inclusion13 decks16 decks
70%synergy
Elemental Bond
75%inclusion12 decks16 decks
69%synergy
Otawara, Soaring City
88%inclusion14 decks16 decks
69%synergy
Adrix and Nev, Twincasters
75%inclusion12 decks16 decks
67%synergy
Top Cards
Beast Within
81%inclusion13 decks16 decks
31%synergy
Birds of Paradise
81%inclusion13 decks16 decks
54%synergy
Three Visits
75%inclusion12 decks16 decks
52%synergy
An Offer You Can't Refuse
75%inclusion12 decks16 decks
52%synergy
Mystic Remora
75%inclusion12 decks16 decks
60%synergy
Roaming Throne
69%inclusion11 decks16 decks
61%synergy
Swan Song
69%inclusion11 decks16 decks
50%synergy
Sakashima the Impostor
69%inclusion11 decks16 decks
66%synergy
Junk Winder
63%inclusion10 decks16 decks
56%synergy
Oko, Thief of Crowns
63%inclusion10 decks16 decks
55%synergy
Game Changers
Rhystic Study
100%inclusion16 decks16 decks
78%synergy
Fierce Guardianship
100%inclusion16 decks16 decks
83%synergy
Gaea's Cradle
94%inclusion15 decks16 decks
86%synergy
Cyclonic Rift
94%inclusion15 decks16 decks
68%synergy
Ancient Tomb
81%inclusion13 decks16 decks
72%synergy
Force of Will
81%inclusion13 decks16 decks
71%synergy
Consecrated Sphinx
69%inclusion11 decks16 decks
60%synergy
Seedborn Muse
50%inclusion8 decks16 decks
34%synergy
Mana Vault
50%inclusion8 decks16 decks
44%synergy
Worldly Tutor
50%inclusion8 decks16 decks
35%synergy
Creatures
Craterhoof Behemoth
63%inclusion10 decks16 decks
53%synergy
Serpent of Yawning Depths
63%inclusion10 decks16 decks
56%synergy
Fyndhorn Elves
63%inclusion10 decks16 decks
47%synergy
Koma, World-Eater
60%inclusion6 decks10 decks
47%synergy
Garruk's Packleader
50%inclusion8 decks16 decks
48%synergy
Enduring Vitality
50%inclusion6 decks12 decks
43%synergy
Elvish Mystic
50%inclusion8 decks16 decks
26%synergy
Hullbreaker Horror
50%inclusion8 decks16 decks
32%synergy
Spawning Kraken
50%inclusion8 decks16 decks
43%synergy
Delighted Halfling
50%inclusion8 decks16 decks
39%synergy
Aesi, Tyrant of Gyre Strait
44%inclusion7 decks16 decks
27%synergy
Llanowar Elves
44%inclusion7 decks16 decks
16%synergy
Sakura-Tribe Elder
44%inclusion7 decks16 decks
24%synergy
Eternal Witness
38%inclusion6 decks16 decks
16%synergy
Gene Pollinator
33%inclusion1 decks3 decks
33%synergy
Fanatic of Rhonas
25%inclusion3 decks12 decks
19%synergy
Kinnan, Bonder Prodigy
25%inclusion4 decks16 decks
22%synergy
Pollywog Prodigy
25%inclusion3 decks12 decks
18%synergy
Ohran Frostfang
25%inclusion4 decks16 decks
21%synergy
Arixmethes, Slumbering Isle
25%inclusion4 decks16 decks
12%synergy
Somberwald Sage
25%inclusion4 decks16 decks
24%synergy
Tatyova, Benthic Druid
19%inclusion3 decks16 decks
-13%synergy
Circle of Dreams Druid
19%inclusion3 decks16 decks
16%synergy
Esix, Fractal Bloom
19%inclusion3 decks16 decks
15%synergy
Archetype of Imagination
19%inclusion3 decks16 decks
14%synergy
Sylvan Safekeeper
19%inclusion3 decks16 decks
15%synergy
Spellskite
19%inclusion3 decks16 decks
13%synergy
Disciple of Freyalise
17%inclusion2 decks12 decks
12%synergy
Hydroelectric Specimen
17%inclusion2 decks12 decks
11%synergy
Sowing Mycospawn
17%inclusion2 decks12 decks
15%synergy
Professor Hojo
17%inclusion1 decks6 decks
17%synergy
Displacer Kitten
13%inclusion2 decks16 decks
8%synergy
Jaheira, Friend of the Forest
13%inclusion2 decks16 decks
9%synergy
Curiosity Crafter
13%inclusion2 decks16 decks
9%synergy
Bloom Tender
13%inclusion2 decks16 decks
8%synergy
Collector Ouphe
13%inclusion2 decks16 decks
11%synergy
Sylvan Caryatid
13%inclusion2 decks16 decks
10%synergy
Kiora's Follower
13%inclusion2 decks16 decks
-2%synergy
Phyrexian Metamorph
13%inclusion2 decks16 decks
4%synergy
Arbor Elf
13%inclusion2 decks16 decks
6%synergy
Wandering Archaic
13%inclusion2 decks16 decks
8%synergy
Elvish Spirit Guide
13%inclusion2 decks16 decks
8%synergy
Gilded Drake
13%inclusion2 decks16 decks
10%synergy
Toski, Bearer of Secrets
13%inclusion2 decks16 decks
9%synergy
Phantasmal Image
13%inclusion2 decks16 decks
9%synergy
Uro, Titan of Nature's Wrath
13%inclusion2 decks16 decks
3%synergy
Oviya, Automech Artisan
11%inclusion1 decks9 decks
9%synergy
Octomancer
8.3%inclusion1 decks12 decks
4%synergy
Overlord of the Hauntwoods
8.3%inclusion1 decks12 decks
5%synergy
Bonny Pall, Clearcutter
8.3%inclusion1 decks12 decks
2%synergy
Instants
Counterspell
63%inclusion10 decks16 decks
13%synergy
Heroic Intervention
56%inclusion9 decks16 decks
26%synergy
Force of Negation
56%inclusion9 decks16 decks
48%synergy
Double Major
50%inclusion8 decks16 decks
42%synergy
Mystical Tutor
50%inclusion8 decks16 decks
41%synergy
Archdruid's Charm
46%inclusion6 decks13 decks
40%synergy
Return of the Wildspeaker
44%inclusion7 decks16 decks
33%synergy
Force of Vigor
44%inclusion7 decks16 decks
39%synergy
Second Harvest
44%inclusion7 decks16 decks
37%synergy
Arcane Denial
44%inclusion7 decks16 decks
21%synergy
Pact of Negation
44%inclusion7 decks16 decks
36%synergy
Rapid Hybridization
38%inclusion6 decks16 decks
11%synergy
Crop Rotation
38%inclusion6 decks16 decks
24%synergy
Negate
38%inclusion6 decks16 decks
11%synergy
Krosan Grip
38%inclusion6 decks16 decks
29%synergy
Chord of Calling
38%inclusion6 decks16 decks
30%synergy
Sink into Stupor
33%inclusion4 decks12 decks
22%synergy
Mindbreak Trap
31%inclusion5 decks16 decks
26%synergy
Flusterstorm
31%inclusion5 decks16 decks
25%synergy
Pongify
25%inclusion4 decks16 decks
0%synergy
Growth Spiral
25%inclusion4 decks16 decks
-19%synergy
Legolas's Quick Reflexes
25%inclusion4 decks16 decks
22%synergy
Nature's Claim
25%inclusion4 decks16 decks
15%synergy
Plasm Capture
19%inclusion3 decks16 decks
15%synergy
Reality Shift
19%inclusion3 decks16 decks
4%synergy
Noxious Revival
19%inclusion3 decks16 decks
13%synergy
Muddle the Mixture
13%inclusion2 decks16 decks
8%synergy
Mental Misstep
13%inclusion2 decks16 decks
7%synergy
Brainstorm
13%inclusion2 decks16 decks
-2%synergy
Tyvar's Stand
13%inclusion2 decks16 decks
10%synergy
Sublime Epiphany
13%inclusion2 decks16 decks
10%synergy
Harrow
13%inclusion2 decks16 decks
1%synergy
Disallow
13%inclusion2 decks16 decks
11%synergy
Delay
13%inclusion2 decks16 decks
10%synergy
Cryptic Command
13%inclusion2 decks16 decks
11%synergy
Stifle
13%inclusion2 decks16 decks
12%synergy
Tamiyo's Safekeeping
13%inclusion2 decks16 decks
7%synergy
Voidslime
13%inclusion2 decks16 decks
7%synergy
March of Swirling Mist
13%inclusion2 decks16 decks
9%synergy
Three Steps Ahead
8.3%inclusion1 decks12 decks
6%synergy
Strix Serenade
8.3%inclusion1 decks12 decks
5%synergy
Veil of Summer
6.3%inclusion1 decks16 decks
0%synergy
Eureka Moment
6.3%inclusion1 decks16 decks
-5%synergy
Snakeskin Veil
6.3%inclusion1 decks16 decks
1%synergy
Chain of Vapor
6.3%inclusion1 decks16 decks
3%synergy
Stubborn Denial
6.3%inclusion1 decks16 decks
4%synergy
Season of Renewal
6.3%inclusion1 decks16 decks
6%synergy
Mystic Reflection
6.3%inclusion1 decks16 decks
4%synergy
Dispel
6.3%inclusion1 decks16 decks
1%synergy
Entish Restoration
6.3%inclusion1 decks16 decks
-3%synergy
Sorceries
Finale of Devastation
63%inclusion10 decks16 decks
51%synergy
Nature's Lore
63%inclusion10 decks16 decks
32%synergy
Kodama's Reach
56%inclusion9 decks16 decks
20%synergy
Farseek
50%inclusion8 decks16 decks
25%synergy
Rampant Growth
50%inclusion8 decks16 decks
9%synergy
Cultivate
50%inclusion8 decks16 decks
3%synergy
Irenicus's Vile Duplication
50%inclusion8 decks16 decks
44%synergy
Green Sun's Zenith
38%inclusion6 decks16 decks
29%synergy
Skyshroud Claim
38%inclusion6 decks16 decks
28%synergy
Sea Gate Restoration
38%inclusion6 decks16 decks
32%synergy
Triumph of the Hordes
31%inclusion5 decks16 decks
28%synergy
Quantum Misalignment
25%inclusion4 decks16 decks
22%synergy
Overwhelming Stampede
25%inclusion4 decks16 decks
13%synergy
Bala Ged Recovery
19%inclusion3 decks16 decks
9%synergy
Eldritch Evolution
13%inclusion2 decks16 decks
9%synergy
Turntimber Symbiosis
13%inclusion2 decks16 decks
10%synergy
Neoform
13%inclusion2 decks16 decks
9%synergy
Temporal Manipulation
13%inclusion2 decks16 decks
11%synergy
Rishkar's Expertise
13%inclusion2 decks16 decks
4%synergy
Explore
13%inclusion2 decks16 decks
-8%synergy
Rite of Replication
13%inclusion2 decks16 decks
5%synergy
Flare of Cultivation
8.3%inclusion1 decks12 decks
6%synergy
Bridgeworks Battle
8.3%inclusion1 decks12 decks
4%synergy
Doppelgang
7.1%inclusion1 decks14 decks
1%synergy
Inundate
6.3%inclusion1 decks16 decks
6%synergy
Polymorph
6.3%inclusion1 decks16 decks
6%synergy
Relearn
6.3%inclusion1 decks16 decks
6%synergy
Last March of the Ents
6.3%inclusion1 decks16 decks
3%synergy
Tempt with Discovery
6.3%inclusion1 decks16 decks
2%synergy
Broken Bond
6.3%inclusion1 decks16 decks
1%synergy
Merchant Scroll
6.3%inclusion1 decks16 decks
5%synergy
Sylvan Tutor
6.3%inclusion1 decks16 decks
5%synergy
Explosive Vegetation
6.3%inclusion1 decks16 decks
1%synergy
Expropriate
6.3%inclusion1 decks16 decks
5%synergy
Nylea's Intervention
6.3%inclusion1 decks16 decks
5%synergy
Shamanic Revelation
6.3%inclusion1 decks16 decks
1%synergy
Migration Path
6.3%inclusion1 decks16 decks
3%synergy
Time Warp
6.3%inclusion1 decks16 decks
4%synergy
Regrowth
6.3%inclusion1 decks16 decks
2%synergy
Sylvan Scrying
6.3%inclusion1 decks16 decks
1%synergy
Utility Artifacts
The One Ring
44%inclusion7 decks16 decks
36%synergy
Lightning Greaves
44%inclusion7 decks16 decks
22%synergy
The Great Henge
31%inclusion5 decks16 decks
22%synergy
Helm of the Host
31%inclusion5 decks16 decks
26%synergy
Swiftfoot Boots
31%inclusion5 decks16 decks
6%synergy
Winter Orb
25%inclusion4 decks16 decks
25%synergy
Static Orb
19%inclusion3 decks16 decks
19%synergy
Coat of Arms
19%inclusion3 decks16 decks
17%synergy
Skullclamp
13%inclusion2 decks16 decks
11%synergy
Eldrazi Monument
13%inclusion2 decks16 decks
12%synergy
Banner of Kinship
10%inclusion1 decks10 decks
8%synergy
Sensei's Divining Top
6.3%inclusion1 decks16 decks
3%synergy
God-Pharaoh's Statue
6.3%inclusion1 decks16 decks
6%synergy
Null Rod
6.3%inclusion1 decks16 decks
6%synergy
Mirror Box
6.3%inclusion1 decks16 decks
3%synergy
Vedalken Orrery
6.3%inclusion1 decks16 decks
5%synergy
Phyrexian Altar
6.3%inclusion1 decks16 decks
6%synergy
Proteus Staff
6.3%inclusion1 decks16 decks
6%synergy
Whispersilk Cloak
6.3%inclusion1 decks16 decks
4%synergy
Combine Chrysalis
6.3%inclusion1 decks16 decks
2%synergy
Bident of Thassa
6.3%inclusion1 decks16 decks
-1%synergy
Obelisk of Urd
6.3%inclusion1 decks16 decks
6%synergy
Birthing Pod
6.3%inclusion1 decks16 decks
5%synergy
Smokestack
6.3%inclusion1 decks16 decks
6%synergy
Enchantments
Kindred Discovery
44%inclusion7 decks16 decks
34%synergy
Tribute to the World Tree
44%inclusion7 decks16 decks
37%synergy
Sylvan Library
44%inclusion7 decks16 decks
35%synergy
Beastmaster Ascension
25%inclusion4 decks16 decks
22%synergy
Wild Growth
25%inclusion4 decks16 decks
16%synergy
Utopia Sprawl
19%inclusion3 decks16 decks
12%synergy
Carpet of Flowers
19%inclusion3 decks16 decks
16%synergy
Defense of the Heart
19%inclusion3 decks16 decks
16%synergy
Growing Rites of Itlimoc
19%inclusion3 decks16 decks
13%synergy
Cryptolith Rite
13%inclusion2 decks16 decks
9%synergy
Asceticism
13%inclusion2 decks16 decks
9%synergy
Paradox Haze
13%inclusion2 decks16 decks
12%synergy
Propaganda
13%inclusion2 decks16 decks
6%synergy
Verity Circle
6.3%inclusion1 decks16 decks
6%synergy
Imprisoned in the Moon
6.3%inclusion1 decks16 decks
2%synergy
Extravagant Replication
6.3%inclusion1 decks16 decks
4%synergy
Steely Resolve
6.3%inclusion1 decks16 decks
6%synergy
Wilderness Reclamation
6.3%inclusion1 decks16 decks
-3%synergy
Stasis
6.3%inclusion1 decks16 decks
6%synergy
Dismiss into Dream
6.3%inclusion1 decks16 decks
6%synergy
Opposition
6.3%inclusion1 decks16 decks
6%synergy
Primal Vigor
6.3%inclusion1 decks16 decks
3%synergy
Quest for Renewal
6.3%inclusion1 decks16 decks
4%synergy
Diplomatic Immunity
6.3%inclusion1 decks16 decks
6%synergy
Battles
Invasion of Ikoria
13%inclusion2 decks16 decks
8%synergy
Planeswalkers
Narset, Parter of Veils
6.3%inclusion1 decks16 decks
5%synergy
Tamiyo, the Moon Sage
6.3%inclusion1 decks16 decks
6%synergy
Utility Lands
Evendo, Waking Haven
67%inclusion2 decks3 decks
61%synergy
Yavimaya, Cradle of Growth
63%inclusion10 decks16 decks
40%synergy
Three Tree City
58%inclusion7 decks12 decks
53%synergy
Command Beacon
56%inclusion9 decks16 decks
52%synergy
Reliquary Tower
56%inclusion9 decks16 decks
6%synergy
Mistrise Village
50%inclusion4 decks8 decks
39%synergy
Urza's Saga
31%inclusion5 decks16 decks
26%synergy
Minamo, School at Water's Edge
25%inclusion4 decks16 decks
19%synergy
Mystic Sanctuary
25%inclusion4 decks16 decks
12%synergy
Alchemist's Refuge
19%inclusion3 decks16 decks
1%synergy
Emergence Zone
19%inclusion3 decks16 decks
15%synergy
Mosswort Bridge
19%inclusion3 decks16 decks
1%synergy
Castle Garenbrig
19%inclusion3 decks16 decks
14%synergy
Rivendell
13%inclusion2 decks16 decks
7%synergy
Nykthos, Shrine to Nyx
13%inclusion2 decks16 decks
10%synergy
Dryad Arbor
13%inclusion2 decks16 decks
7%synergy
Shifting Woodland
8.3%inclusion1 decks12 decks
2%synergy
Restless Vinestalk
6.3%inclusion1 decks16 decks
1%synergy
Wasteland
6.3%inclusion1 decks16 decks
5%synergy
Boseiju, Who Shelters All
6.3%inclusion1 decks16 decks
6%synergy
Tolaria West
6.3%inclusion1 decks16 decks
5%synergy
Scavenger Grounds
6.3%inclusion1 decks16 decks
2%synergy
Oran-Rief, the Vastwood
6.3%inclusion1 decks16 decks
1%synergy
Rogue's Passage
6.3%inclusion1 decks16 decks
-16%synergy
Mana Artifacts
Sol Ring
94%inclusion15 decks16 decks
13%synergy
Arcane Signet
88%inclusion14 decks16 decks
25%synergy
Talisman of Curiosity
63%inclusion10 decks16 decks
41%synergy
Simic Signet
31%inclusion5 decks16 decks
-1%synergy
Jeweled Lotus
19%inclusion3 decks16 decks
17%synergy
Mana Crypt
19%inclusion3 decks16 decks
15%synergy
Fellwar Stone
19%inclusion3 decks16 decks
9%synergy
Thought Vessel
19%inclusion3 decks16 decks
-2%synergy
Chrome Mox
19%inclusion3 decks16 decks
12%synergy
Lotus Petal
13%inclusion2 decks16 decks
6%synergy
Grim Monolith
6.3%inclusion1 decks16 decks
3%synergy
Mox Amber
6.3%inclusion1 decks16 decks
0%synergy
Coveted Jewel
6.3%inclusion1 decks16 decks
6%synergy
Gilded Lotus
6.3%inclusion1 decks16 decks
4%synergy
Thran Dynamo
6.3%inclusion1 decks16 decks
3%synergy
Mox Diamond
6.3%inclusion1 decks16 decks
1%synergy
Lands
Command Tower
100%inclusion16 decks16 decks
15%synergy
Breeding Pool
100%inclusion16 decks16 decks
54%synergy
Misty Rainforest
94%inclusion15 decks16 decks
63%synergy
Tropical Island
94%inclusion15 decks16 decks
80%synergy
Rejuvenating Springs
94%inclusion15 decks16 decks
50%synergy
Island
81%inclusion13 decks16 decks
-14%synergy
Forest
81%inclusion13 decks16 decks
-14%synergy
Yavimaya Coast
69%inclusion11 decks16 decks
16%synergy
Barkchannel Pathway
63%inclusion10 decks16 decks
42%synergy
Waterlogged Grove
50%inclusion8 decks16 decks
29%synergy
Hinterland Harbor
50%inclusion8 decks16 decks
-9%synergy
Mana Confluence
44%inclusion7 decks16 decks
38%synergy
Dreamroot Cascade
44%inclusion7 decks16 decks
2%synergy
Hedge Maze
43%inclusion6 decks14 decks
23%synergy
Prismatic Vista
38%inclusion6 decks16 decks
30%synergy
Sea Gate Restoration
38%inclusion6 decks16 decks
32%synergy
Verdant Catacombs
38%inclusion6 decks16 decks
28%synergy
Flooded Grove
38%inclusion6 decks16 decks
-3%synergy
Sink into Stupor
33%inclusion4 decks12 decks
22%synergy
Willowrush Verge
33%inclusion3 decks9 decks
17%synergy
Snow-Covered Island
31%inclusion5 decks16 decks
24%synergy
Snow-Covered Forest
31%inclusion5 decks16 decks
24%synergy
City of Brass
31%inclusion5 decks16 decks
25%synergy
Exotic Orchard
25%inclusion4 decks16 decks
1%synergy
Windswept Heath
25%inclusion4 decks16 decks
15%synergy
Wooded Foothills
25%inclusion4 decks16 decks
15%synergy
Scalding Tarn
25%inclusion4 decks16 decks
15%synergy
Simic Growth Chamber
19%inclusion3 decks16 decks
-30%synergy
Bala Ged Recovery
19%inclusion3 decks16 decks
9%synergy
Polluted Delta
19%inclusion3 decks16 decks
8%synergy
Disciple of Freyalise
17%inclusion2 decks12 decks
12%synergy
Hydroelectric Specimen
17%inclusion2 decks12 decks
11%synergy
Fabled Passage
13%inclusion2 decks16 decks
-2%synergy
Vineglimmer Snarl
13%inclusion2 decks16 decks
-26%synergy
Turntimber Symbiosis
13%inclusion2 decks16 decks
10%synergy
Temple of Mystery
13%inclusion2 decks16 decks
-26%synergy
Gemstone Caverns
13%inclusion2 decks16 decks
7%synergy
Flooded Strand
13%inclusion2 decks16 decks
1%synergy
Horizon of Progress
8.3%inclusion1 decks12 decks
3%synergy
Bridgeworks Battle
8.3%inclusion1 decks12 decks
4%synergy
Blighted Woodland
6.3%inclusion1 decks16 decks
-1%synergy
Myriad Landscape
6.3%inclusion1 decks16 decks
-16%synergy
Cavern of Souls
6.3%inclusion1 decks16 decks
0%synergy
Plaza of Heroes
6.3%inclusion1 decks16 decks
5%synergy
Glasspool Mimic
6.3%inclusion1 decks16 decks
2%synergy
Thornwood Falls
6.3%inclusion1 decks16 decks
-11%synergy
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