Koma, Cosmos Serpent (Commander) - Optimized Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Background image for How To Play Sea Creatures Differently In Commander
Sikora
Nov 13, 2025
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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Archidekt
Commander Spellbook
Moxfield
Scryfall
Wan Shi Tong, Librarian
10%inclusion1 decks10 decks
5%synergy
Badgermole Cub
10%inclusion1 decks10 decks
6%synergy
The Unagi of Kyoshi Island
10%inclusion1 decks10 decks
6%synergy
Agna Qel'a
10%inclusion1 decks10 decks
9%synergy
The Cabbage Merchant
6.7%inclusion1 decks15 decks
6%synergy
High Synergy Cards
Adrix and Nev, Twincasters
81%inclusion25 decks31 decks
72%synergy
Parallel Lives
74%inclusion23 decks31 decks
68%synergy
Spark Double
77%inclusion24 decks31 decks
68%synergy
Sakashima of a Thousand Faces
68%inclusion21 decks31 decks
63%synergy
Whelming Wave
71%inclusion22 decks31 decks
60%synergy
Mana Drain
74%inclusion23 decks31 decks
58%synergy
Elemental Bond
61%inclusion19 decks31 decks
56%synergy
Mystic Remora
68%inclusion21 decks31 decks
52%synergy
Three Visits
74%inclusion23 decks31 decks
51%synergy
Sakashima the Impostor
52%inclusion16 decks31 decks
49%synergy
Top Cards
Counterspell
77%inclusion24 decks31 decks
27%synergy
Heroic Intervention
74%inclusion23 decks31 decks
44%synergy
Birds of Paradise
74%inclusion23 decks31 decks
47%synergy
Nature's Lore
71%inclusion22 decks31 decks
41%synergy
Beast Within
65%inclusion20 decks31 decks
14%synergy
Kodama's Reach
61%inclusion19 decks31 decks
25%synergy
An Offer You Can't Refuse
61%inclusion19 decks31 decks
38%synergy
Cultivate
61%inclusion19 decks31 decks
14%synergy
Koma, World-Eater
60%inclusion18 decks30 decks
47%synergy
Doubling Season
58%inclusion18 decks31 decks
49%synergy
Game Changers
Fierce Guardianship
87%inclusion27 decks31 decks
70%synergy
Cyclonic Rift
87%inclusion27 decks31 decks
61%synergy
Rhystic Study
84%inclusion26 decks31 decks
62%synergy
Worldly Tutor
52%inclusion16 decks31 decks
36%synergy
Force of Will
48%inclusion15 decks31 decks
38%synergy
Consecrated Sphinx
45%inclusion14 decks31 decks
36%synergy
Seedborn Muse
45%inclusion14 decks31 decks
29%synergy
Mystical Tutor
45%inclusion14 decks31 decks
36%synergy
Ancient Tomb
42%inclusion13 decks31 decks
33%synergy
Mana Vault
32%inclusion10 decks31 decks
26%synergy
Creatures
Junk Winder
48%inclusion15 decks31 decks
42%synergy
Aesi, Tyrant of Gyre Strait
48%inclusion15 decks31 decks
31%synergy
Elvish Mystic
45%inclusion14 decks31 decks
21%synergy
Llanowar Elves
45%inclusion14 decks31 decks
17%synergy
Serpent of Yawning Depths
45%inclusion14 decks31 decks
39%synergy
Craterhoof Behemoth
42%inclusion13 decks31 decks
32%synergy
Fyndhorn Elves
39%inclusion12 decks31 decks
23%synergy
Enduring Vitality
37%inclusion11 decks30 decks
29%synergy
Eternal Witness
35%inclusion11 decks31 decks
14%synergy
Spawning Kraken
35%inclusion11 decks31 decks
28%synergy
Roaming Throne
32%inclusion10 decks31 decks
24%synergy
Sakura-Tribe Elder
29%inclusion9 decks31 decks
10%synergy
Garruk's Packleader
26%inclusion8 decks31 decks
24%synergy
Delighted Halfling
26%inclusion8 decks31 decks
14%synergy
Hullbreaker Horror
23%inclusion7 decks31 decks
5%synergy
Summon: Leviathan
21%inclusion5 decks24 decks
14%synergy
Tatyova, Benthic Druid
19%inclusion6 decks31 decks
-12%synergy
Fanatic of Rhonas
19%inclusion6 decks31 decks
14%synergy
Kinnan, Bonder Prodigy
19%inclusion6 decks31 decks
16%synergy
Vorinclex, Voice of Hunger
19%inclusion6 decks31 decks
16%synergy
Arbor Elf
16%inclusion5 decks31 decks
10%synergy
Coiling Oracle
16%inclusion5 decks31 decks
3%synergy
Lotus Cobra
16%inclusion5 decks31 decks
2%synergy
Esix, Fractal Bloom
16%inclusion5 decks31 decks
12%synergy
Faerie Mastermind
16%inclusion5 decks31 decks
12%synergy
Tireless Provisioner
16%inclusion5 decks31 decks
1%synergy
Uro, Titan of Nature's Wrath
16%inclusion5 decks31 decks
6%synergy
Selvala, Heart of the Wilds
13%inclusion4 decks31 decks
10%synergy
Sphinx of the Second Sun
13%inclusion4 decks31 decks
12%synergy
Azusa, Lost but Seeking
13%inclusion4 decks31 decks
-1%synergy
Toski, Bearer of Secrets
13%inclusion4 decks31 decks
9%synergy
Ohran Frostfang
13%inclusion4 decks31 decks
9%synergy
Glasspool Mimic
13%inclusion4 decks31 decks
9%synergy
Arixmethes, Slumbering Isle
13%inclusion4 decks31 decks
-1%synergy
Enduring Curiosity
10%inclusion3 decks30 decks
7%synergy
Peregrine Drake
10%inclusion3 decks31 decks
5%synergy
Curiosity Crafter
10%inclusion3 decks31 decks
6%synergy
Circle of Dreams Druid
10%inclusion3 decks31 decks
7%synergy
Overlord of the Hauntwoods
10%inclusion3 decks31 decks
7%synergy
Saryth, the Viper's Fang
10%inclusion3 decks31 decks
8%synergy
Hydroelectric Specimen
10%inclusion3 decks31 decks
4%synergy
Spellskite
10%inclusion3 decks31 decks
4%synergy
Ledger Shredder
10%inclusion3 decks31 decks
8%synergy
Loot, Exuberant Explorer
6.7%inclusion2 decks30 decks
-1%synergy
Solemn Simulacrum
6.5%inclusion2 decks31 decks
0%synergy
Maraleaf Pixie
6.5%inclusion2 decks31 decks
1%synergy
Reclamation Sage
6.5%inclusion2 decks31 decks
-8%synergy
Collector Ouphe
6.5%inclusion2 decks31 decks
5%synergy
Troyan, Gutsy Explorer
6.5%inclusion2 decks31 decks
3%synergy
Sylvan Caryatid
6.5%inclusion2 decks31 decks
4%synergy
Instants
Swan Song
58%inclusion18 decks31 decks
39%synergy
Rapid Hybridization
42%inclusion13 decks31 decks
16%synergy
Force of Negation
42%inclusion13 decks31 decks
33%synergy
Pact of Negation
39%inclusion12 decks31 decks
31%synergy
Pongify
35%inclusion11 decks31 decks
11%synergy
Arcane Denial
32%inclusion10 decks31 decks
10%synergy
Second Harvest
29%inclusion9 decks31 decks
23%synergy
Chord of Calling
29%inclusion9 decks31 decks
21%synergy
Double Major
29%inclusion9 decks31 decks
21%synergy
Growth Spiral
26%inclusion8 decks31 decks
-19%synergy
Nature's Claim
26%inclusion8 decks31 decks
16%synergy
Reality Shift
26%inclusion8 decks31 decks
11%synergy
Sink into Stupor
26%inclusion8 decks31 decks
14%synergy
Crop Rotation
23%inclusion7 decks31 decks
9%synergy
Negate
23%inclusion7 decks31 decks
-3%synergy
Archdruid's Charm
19%inclusion6 decks31 decks
13%synergy
Force of Vigor
19%inclusion6 decks31 decks
15%synergy
Return of the Wildspeaker
16%inclusion5 decks31 decks
6%synergy
Krosan Grip
16%inclusion5 decks31 decks
8%synergy
Harrow
16%inclusion5 decks31 decks
4%synergy
Strix Serenade
16%inclusion5 decks31 decks
12%synergy
Consult the Star Charts
11%inclusion2 decks19 decks
9%synergy
Muddle the Mixture
10%inclusion3 decks31 decks
5%synergy
Eureka Moment
10%inclusion3 decks31 decks
-1%synergy
Disdainful Stroke
10%inclusion3 decks31 decks
8%synergy
Brainstorm
10%inclusion3 decks31 decks
-5%synergy
Stubborn Denial
10%inclusion3 decks31 decks
7%synergy
Tyvar's Stand
10%inclusion3 decks31 decks
7%synergy
Mindbreak Trap
10%inclusion3 decks31 decks
5%synergy
Mystic Reflection
10%inclusion3 decks31 decks
7%synergy
Return to Nature
10%inclusion3 decks31 decks
4%synergy
Resculpt
10%inclusion3 decks31 decks
4%synergy
Wash Away
10%inclusion3 decks31 decks
8%synergy
Planar Genesis
10%inclusion3 decks31 decks
-1%synergy
Tamiyo's Safekeeping
10%inclusion3 decks31 decks
4%synergy
Misdirection
10%inclusion3 decks31 decks
8%synergy
Dramatic Reversal
10%inclusion3 decks31 decks
5%synergy
Whir of Invention
6.5%inclusion2 decks31 decks
4%synergy
Mental Misstep
6.5%inclusion2 decks31 decks
1%synergy
Snakeskin Veil
6.5%inclusion2 decks31 decks
1%synergy
Sublime Epiphany
6.5%inclusion2 decks31 decks
4%synergy
Legolas's Quick Reflexes
6.5%inclusion2 decks31 decks
4%synergy
Dispel
6.5%inclusion2 decks31 decks
2%synergy
Daze
6.5%inclusion2 decks31 decks
6%synergy
Slip Out the Back
6.5%inclusion2 decks31 decks
3%synergy
Flusterstorm
6.5%inclusion2 decks31 decks
0%synergy
Filter Out
6.5%inclusion2 decks31 decks
4%synergy
Saw It Coming
6.5%inclusion2 decks31 decks
5%synergy
Snap
6.5%inclusion2 decks31 decks
2%synergy
Collective Resistance
6.5%inclusion2 decks31 decks
3%synergy
Sorceries
Rampant Growth
48%inclusion15 decks31 decks
8%synergy
Skyshroud Claim
42%inclusion13 decks31 decks
33%synergy
Farseek
42%inclusion13 decks31 decks
17%synergy
Irenicus's Vile Duplication
39%inclusion12 decks31 decks
32%synergy
Triumph of the Hordes
29%inclusion9 decks31 decks
26%synergy
Finale of Devastation
29%inclusion9 decks31 decks
17%synergy
Green Sun's Zenith
23%inclusion7 decks31 decks
14%synergy
Bala Ged Recovery
19%inclusion6 decks31 decks
9%synergy
Windfall
16%inclusion5 decks31 decks
12%synergy
Quantum Misalignment
16%inclusion5 decks31 decks
13%synergy
Fabricate
16%inclusion5 decks31 decks
9%synergy
Sea Gate Restoration
16%inclusion5 decks31 decks
11%synergy
Rishkar's Expertise
16%inclusion5 decks31 decks
8%synergy
Quasiduplicate
13%inclusion4 decks31 decks
10%synergy
Explosive Vegetation
13%inclusion4 decks31 decks
7%synergy
Expropriate
13%inclusion4 decks31 decks
11%synergy
Migration Path
13%inclusion4 decks31 decks
9%synergy
Time Warp
13%inclusion4 decks31 decks
11%synergy
Into the North
10%inclusion3 decks31 decks
9%synergy
Tempt with Discovery
10%inclusion3 decks31 decks
6%synergy
Lórien Revealed
10%inclusion3 decks31 decks
7%synergy
Natural Order
10%inclusion3 decks31 decks
8%synergy
Personal Tutor
10%inclusion3 decks31 decks
9%synergy
Search for Tomorrow
10%inclusion3 decks31 decks
5%synergy
Distant Melody
10%inclusion3 decks31 decks
6%synergy
Doppelgang
10%inclusion3 decks31 decks
3%synergy
Regrowth
10%inclusion3 decks31 decks
6%synergy
Solve the Equation
10%inclusion3 decks31 decks
7%synergy
Raise the Palisade
10%inclusion3 decks31 decks
3%synergy
Inundate
6.5%inclusion2 decks31 decks
6%synergy
Eldritch Evolution
6.5%inclusion2 decks31 decks
3%synergy
Flare of Cultivation
6.5%inclusion2 decks31 decks
4%synergy
Tooth and Nail
6.5%inclusion2 decks31 decks
5%synergy
Last March of the Ents
6.5%inclusion2 decks31 decks
3%synergy
Awaken the Woods
6.5%inclusion2 decks31 decks
2%synergy
Turntimber Symbiosis
6.5%inclusion2 decks31 decks
4%synergy
Neoform
6.5%inclusion2 decks31 decks
3%synergy
Curse of the Swine
6.5%inclusion2 decks31 decks
-5%synergy
Temporal Mastery
6.5%inclusion2 decks31 decks
5%synergy
Temporal Manipulation
6.5%inclusion2 decks31 decks
5%synergy
Drawn from Dreams
6.5%inclusion2 decks31 decks
6%synergy
Harmonize
6.5%inclusion2 decks31 decks
1%synergy
Vastwood Surge
6.5%inclusion2 decks31 decks
5%synergy
Ravenform
6.5%inclusion2 decks31 decks
2%synergy
Open the Way
6.5%inclusion2 decks31 decks
4%synergy
Overwhelming Stampede
6.5%inclusion2 decks31 decks
-6%synergy
Genesis Wave
6.5%inclusion2 decks31 decks
2%synergy
Rite of Replication
6.5%inclusion2 decks31 decks
-1%synergy
Utility Artifacts
Lightning Greaves
48%inclusion15 decks31 decks
27%synergy
Swiftfoot Boots
35%inclusion11 decks31 decks
10%synergy
Helm of the Host
32%inclusion10 decks31 decks
27%synergy
The One Ring
26%inclusion8 decks31 decks
18%synergy
Static Orb
23%inclusion7 decks31 decks
22%synergy
Winter Orb
23%inclusion7 decks31 decks
22%synergy
Mirror Box
16%inclusion5 decks31 decks
13%synergy
Isochron Scepter
13%inclusion4 decks31 decks
10%synergy
Sensei's Divining Top
10%inclusion3 decks31 decks
6%synergy
Skullclamp
10%inclusion3 decks31 decks
9%synergy
The Great Henge
10%inclusion3 decks31 decks
1%synergy
Winter Moon
10%inclusion3 decks31 decks
9%synergy
Emerald Medallion
10%inclusion3 decks31 decks
7%synergy
Banner of Kinship
6.7%inclusion2 decks30 decks
5%synergy
Giant's Amulet
6.5%inclusion2 decks31 decks
6%synergy
Soul-Guide Lantern
6.5%inclusion2 decks31 decks
6%synergy
Moonsilver Key
6.5%inclusion2 decks31 decks
3%synergy
Coat of Arms
6.5%inclusion2 decks31 decks
5%synergy
Combine Chrysalis
6.5%inclusion2 decks31 decks
2%synergy
Idol of Oblivion
6.5%inclusion2 decks31 decks
3%synergy
Commander's Plate
6.5%inclusion2 decks31 decks
6%synergy
Sapphire Medallion
6.5%inclusion2 decks31 decks
3%synergy
Enchantments
Tribute to the World Tree
52%inclusion16 decks31 decks
45%synergy
Sylvan Library
48%inclusion15 decks31 decks
39%synergy
Kindred Discovery
19%inclusion6 decks31 decks
9%synergy
Utopia Sprawl
16%inclusion5 decks31 decks
10%synergy
Wild Growth
16%inclusion5 decks31 decks
7%synergy
Primal Vigor
16%inclusion5 decks31 decks
13%synergy
Defense of the Heart
16%inclusion5 decks31 decks
14%synergy
Moonlit Meditation
16%inclusion3 decks19 decks
14%synergy
Verity Circle
13%inclusion4 decks31 decks
12%synergy
Kenrith's Transformation
13%inclusion4 decks31 decks
8%synergy
Paradox Haze
13%inclusion4 decks31 decks
13%synergy
Cryptolith Rite
10%inclusion3 decks31 decks
7%synergy
Back to Basics
10%inclusion3 decks31 decks
9%synergy
Exploration
10%inclusion3 decks31 decks
-4%synergy
Carpet of Flowers
10%inclusion3 decks31 decks
7%synergy
Imprisoned in the Moon
10%inclusion3 decks31 decks
6%synergy
Unnatural Growth
10%inclusion3 decks31 decks
6%synergy
Song of the Dryads
10%inclusion3 decks31 decks
8%synergy
Dismiss into Dream
10%inclusion3 decks31 decks
9%synergy
Opposition
10%inclusion3 decks31 decks
9%synergy
Impostor Syndrome
6.7%inclusion1 decks15 decks
5%synergy
Wizard Class
6.5%inclusion2 decks31 decks
1%synergy
Pattern of Rebirth
6.5%inclusion2 decks31 decks
6%synergy
Stasis
6.5%inclusion2 decks31 decks
6%synergy
Propaganda
6.5%inclusion2 decks31 decks
0%synergy
Growing Rites of Itlimoc
6.5%inclusion2 decks31 decks
0%synergy
Eusocial Engineering
5.0%inclusion1 decks20 decks
4%synergy
Planeswalkers
Oko, Thief of Crowns
48%inclusion15 decks31 decks
41%synergy
Narset, Parter of Veils
10%inclusion3 decks31 decks
8%synergy
Tezzeret the Seeker
6.5%inclusion2 decks31 decks
2%synergy
Utility Lands
Boseiju, Who Endures
61%inclusion19 decks31 decks
39%synergy
Reliquary Tower
58%inclusion18 decks31 decks
8%synergy
Command Beacon
39%inclusion12 decks31 decks
35%synergy
Mistrise Village
36%inclusion10 decks28 decks
25%synergy
Yavimaya, Cradle of Growth
35%inclusion11 decks31 decks
13%synergy
Otawara, Soaring City
35%inclusion11 decks31 decks
17%synergy
Evendo, Waking Haven
21%inclusion4 decks19 decks
16%synergy
Mystic Sanctuary
19%inclusion6 decks31 decks
7%synergy
Gaea's Cradle
19%inclusion6 decks31 decks
12%synergy
Castle Garenbrig
19%inclusion6 decks31 decks
15%synergy
Urza's Saga
16%inclusion5 decks31 decks
11%synergy
Three Tree City
16%inclusion5 decks31 decks
11%synergy
Alchemist's Refuge
13%inclusion4 decks31 decks
-5%synergy
Minamo, School at Water's Edge
10%inclusion3 decks31 decks
3%synergy
Mosswort Bridge
10%inclusion3 decks31 decks
-8%synergy
Thespian's Stage
10%inclusion3 decks31 decks
3%synergy
Temple of the False God
10%inclusion3 decks31 decks
-6%synergy
Dryad Arbor
10%inclusion3 decks31 decks
4%synergy
Rogue's Passage
10%inclusion3 decks31 decks
-12%synergy
Rivendell
6.5%inclusion2 decks31 decks
1%synergy
Boseiju, Who Shelters All
6.5%inclusion2 decks31 decks
6%synergy
Mirrorpool
6.5%inclusion2 decks31 decks
6%synergy
Scavenger Grounds
6.5%inclusion2 decks31 decks
2%synergy
Crystal Vein
6.5%inclusion2 decks31 decks
6%synergy
Emergence Zone
6.5%inclusion2 decks31 decks
2%synergy
Shifting Woodland
6.5%inclusion2 decks31 decks
0%synergy
Field of the Dead
6.5%inclusion2 decks31 decks
0%synergy
Cephalid Coliseum
6.5%inclusion2 decks31 decks
2%synergy
Homeward Path
6.5%inclusion2 decks31 decks
4%synergy
Castle Vantress
6.5%inclusion2 decks31 decks
0%synergy
Mana Artifacts
Sol Ring
94%inclusion29 decks31 decks
13%synergy
Arcane Signet
87%inclusion27 decks31 decks
24%synergy
Thought Vessel
42%inclusion13 decks31 decks
22%synergy
Talisman of Curiosity
39%inclusion12 decks31 decks
17%synergy
Simic Signet
35%inclusion11 decks31 decks
3%synergy
Lotus Petal
16%inclusion5 decks31 decks
9%synergy
Basalt Monolith
13%inclusion4 decks31 decks
6%synergy
Fellwar Stone
13%inclusion4 decks31 decks
3%synergy
Chrome Mox
10%inclusion3 decks31 decks
3%synergy
Mind Stone
6.5%inclusion2 decks31 decks
2%synergy
Lands
Breeding Pool
94%inclusion29 decks31 decks
48%synergy
Command Tower
90%inclusion28 decks31 decks
5%synergy
Forest
84%inclusion26 decks31 decks
-11%synergy
Rejuvenating Springs
84%inclusion26 decks31 decks
40%synergy
Island
81%inclusion25 decks31 decks
-15%synergy
Misty Rainforest
71%inclusion22 decks31 decks
40%synergy
Hinterland Harbor
71%inclusion22 decks31 decks
12%synergy
Yavimaya Coast
65%inclusion20 decks31 decks
12%synergy
Dreamroot Cascade
61%inclusion19 decks31 decks
20%synergy
Barkchannel Pathway
58%inclusion18 decks31 decks
38%synergy
Simic Growth Chamber
48%inclusion15 decks31 decks
0%synergy
Flooded Grove
48%inclusion15 decks31 decks
8%synergy
Waterlogged Grove
39%inclusion12 decks31 decks
18%synergy
Prismatic Vista
35%inclusion11 decks31 decks
28%synergy
Willowrush Verge
30%inclusion9 decks30 decks
14%synergy
Tropical Island
29%inclusion9 decks31 decks
15%synergy
Hedge Maze
29%inclusion9 decks31 decks
9%synergy
Fabled Passage
26%inclusion8 decks31 decks
11%synergy
Exotic Orchard
26%inclusion8 decks31 decks
2%synergy
Windswept Heath
26%inclusion8 decks31 decks
15%synergy
Sink into Stupor
26%inclusion8 decks31 decks
14%synergy
Snow-Covered Island
23%inclusion7 decks31 decks
16%synergy
Snow-Covered Forest
23%inclusion7 decks31 decks
16%synergy
Rimewood Falls
23%inclusion7 decks31 decks
13%synergy
Flooded Strand
23%inclusion7 decks31 decks
11%synergy
Vineglimmer Snarl
19%inclusion6 decks31 decks
-19%synergy
Verdant Catacombs
19%inclusion6 decks31 decks
10%synergy
Botanical Sanctum
19%inclusion6 decks31 decks
7%synergy
Scalding Tarn
19%inclusion6 decks31 decks
9%synergy
Bala Ged Recovery
19%inclusion6 decks31 decks
9%synergy
Myriad Landscape
16%inclusion5 decks31 decks
-6%synergy
Sea Gate Restoration
16%inclusion5 decks31 decks
11%synergy
Wooded Foothills
16%inclusion5 decks31 decks
7%synergy
Mana Confluence
16%inclusion5 decks31 decks
10%synergy
Polluted Delta
16%inclusion5 decks31 decks
6%synergy
Reflecting Pool
13%inclusion4 decks31 decks
10%synergy
Temple of Mystery
13%inclusion4 decks31 decks
-26%synergy
Glasspool Mimic
13%inclusion4 decks31 decks
9%synergy
City of Brass
13%inclusion4 decks31 decks
7%synergy
Tangled Islet
10%inclusion3 decks31 decks
-7%synergy
Hydroelectric Specimen
10%inclusion3 decks31 decks
4%synergy
Cavern of Souls
10%inclusion3 decks31 decks
4%synergy
Evolving Wilds
10%inclusion3 decks31 decks
-15%synergy
Vibrant Cityscape
7.7%inclusion1 decks13 decks
6%synergy
Terramorphic Expanse
6.5%inclusion2 decks31 decks
-13%synergy
Turntimber Symbiosis
6.5%inclusion2 decks31 decks
4%synergy
Urza's Cave
6.5%inclusion2 decks31 decks
2%synergy
Gemstone Caverns
6.5%inclusion2 decks31 decks
1%synergy