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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Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
Badgermole Cub
18%inclusion2 decks11 decks
14%synergy
Wan Shi Tong, Librarian
9.1%inclusion1 decks11 decks
4%synergy
The Unagi of Kyoshi Island
9.1%inclusion1 decks11 decks
4%synergy
Agna Qel'a
9.1%inclusion1 decks11 decks
8%synergy
The Cabbage Merchant
7.1%inclusion1 decks14 decks
6%synergy
High Synergy Cards
Adrix and Nev, Twincasters
80%inclusion24 decks30 decks
72%synergy
Parallel Lives
73%inclusion22 decks30 decks
67%synergy
Spark Double
73%inclusion22 decks30 decks
64%synergy
Sakashima of a Thousand Faces
67%inclusion20 decks30 decks
62%synergy
Whelming Wave
70%inclusion21 decks30 decks
59%synergy
Mana Drain
73%inclusion22 decks30 decks
58%synergy
Mystic Remora
70%inclusion21 decks30 decks
55%synergy
Elemental Bond
60%inclusion18 decks30 decks
54%synergy
Three Visits
73%inclusion22 decks30 decks
50%synergy
Koma, World-Eater
62%inclusion18 decks29 decks
49%synergy
Top Cards
Counterspell
77%inclusion23 decks30 decks
27%synergy
Heroic Intervention
73%inclusion22 decks30 decks
43%synergy
Birds of Paradise
73%inclusion22 decks30 decks
46%synergy
Nature's Lore
70%inclusion21 decks30 decks
40%synergy
An Offer You Can't Refuse
67%inclusion20 decks30 decks
44%synergy
Beast Within
63%inclusion19 decks30 decks
13%synergy
Kodama's Reach
60%inclusion18 decks30 decks
24%synergy
Cultivate
60%inclusion18 decks30 decks
13%synergy
Swan Song
60%inclusion18 decks30 decks
41%synergy
Doubling Season
57%inclusion17 decks30 decks
47%synergy
Game Changers
Rhystic Study
87%inclusion26 decks30 decks
65%synergy
Fierce Guardianship
87%inclusion26 decks30 decks
69%synergy
Cyclonic Rift
87%inclusion26 decks30 decks
61%synergy
Force of Will
50%inclusion15 decks30 decks
40%synergy
Worldly Tutor
50%inclusion15 decks30 decks
35%synergy
Consecrated Sphinx
47%inclusion14 decks30 decks
38%synergy
Seedborn Muse
47%inclusion14 decks30 decks
31%synergy
Mystical Tutor
47%inclusion14 decks30 decks
37%synergy
Ancient Tomb
43%inclusion13 decks30 decks
34%synergy
Mana Vault
33%inclusion10 decks30 decks
27%synergy
Creatures
Junk Winder
50%inclusion15 decks30 decks
43%synergy
Sakashima the Impostor
50%inclusion15 decks30 decks
47%synergy
Elvish Mystic
47%inclusion14 decks30 decks
23%synergy
Aesi, Tyrant of Gyre Strait
47%inclusion14 decks30 decks
29%synergy
Llanowar Elves
43%inclusion13 decks30 decks
16%synergy
Serpent of Yawning Depths
43%inclusion13 decks30 decks
37%synergy
Craterhoof Behemoth
40%inclusion12 decks30 decks
31%synergy
Enduring Vitality
38%inclusion11 decks29 decks
30%synergy
Eternal Witness
37%inclusion11 decks30 decks
16%synergy
Fyndhorn Elves
37%inclusion11 decks30 decks
21%synergy
Spawning Kraken
33%inclusion10 decks30 decks
26%synergy
Roaming Throne
30%inclusion9 decks30 decks
22%synergy
Sakura-Tribe Elder
30%inclusion9 decks30 decks
11%synergy
Garruk's Packleader
27%inclusion8 decks30 decks
24%synergy
Delighted Halfling
27%inclusion8 decks30 decks
15%synergy
Hullbreaker Horror
23%inclusion7 decks30 decks
6%synergy
Summon: Leviathan
22%inclusion5 decks23 decks
15%synergy
Tatyova, Benthic Druid
20%inclusion6 decks30 decks
-11%synergy
Kinnan, Bonder Prodigy
20%inclusion6 decks30 decks
17%synergy
Vorinclex, Voice of Hunger
20%inclusion6 decks30 decks
17%synergy
Arbor Elf
17%inclusion5 decks30 decks
10%synergy
Coiling Oracle
17%inclusion5 decks30 decks
3%synergy
Azusa, Lost but Seeking
17%inclusion5 decks30 decks
3%synergy
Fanatic of Rhonas
17%inclusion5 decks30 decks
11%synergy
Lotus Cobra
17%inclusion5 decks30 decks
3%synergy
Esix, Fractal Bloom
17%inclusion5 decks30 decks
13%synergy
Faerie Mastermind
17%inclusion5 decks30 decks
12%synergy
Tireless Provisioner
17%inclusion5 decks30 decks
1%synergy
Uro, Titan of Nature's Wrath
17%inclusion5 decks30 decks
7%synergy
Selvala, Heart of the Wilds
13%inclusion4 decks30 decks
10%synergy
Sphinx of the Second Sun
13%inclusion4 decks30 decks
12%synergy
Toski, Bearer of Secrets
13%inclusion4 decks30 decks
10%synergy
Ohran Frostfang
13%inclusion4 decks30 decks
10%synergy
Glasspool Mimic
13%inclusion4 decks30 decks
9%synergy
Arixmethes, Slumbering Isle
13%inclusion4 decks30 decks
0%synergy
Enduring Curiosity
10%inclusion3 decks29 decks
7%synergy
Peregrine Drake
10%inclusion3 decks30 decks
6%synergy
Curiosity Crafter
10%inclusion3 decks30 decks
7%synergy
Circle of Dreams Druid
10%inclusion3 decks30 decks
8%synergy
Overlord of the Hauntwoods
10%inclusion3 decks30 decks
7%synergy
Saryth, the Viper's Fang
10%inclusion3 decks30 decks
8%synergy
Hydroelectric Specimen
10%inclusion3 decks30 decks
4%synergy
Spellskite
10%inclusion3 decks30 decks
5%synergy
Ledger Shredder
10%inclusion3 decks30 decks
8%synergy
Loot, Exuberant Explorer
6.9%inclusion2 decks29 decks
-1%synergy
Solemn Simulacrum
6.7%inclusion2 decks30 decks
0%synergy
Maraleaf Pixie
6.7%inclusion2 decks30 decks
1%synergy
Reclamation Sage
6.7%inclusion2 decks30 decks
-8%synergy
Collector Ouphe
6.7%inclusion2 decks30 decks
6%synergy
Troyan, Gutsy Explorer
6.7%inclusion2 decks30 decks
3%synergy
Instants
Force of Negation
43%inclusion13 decks30 decks
35%synergy
Rapid Hybridization
40%inclusion12 decks30 decks
14%synergy
Pact of Negation
37%inclusion11 decks30 decks
29%synergy
Pongify
33%inclusion10 decks30 decks
9%synergy
Chord of Calling
30%inclusion9 decks30 decks
22%synergy
Arcane Denial
30%inclusion9 decks30 decks
8%synergy
Double Major
30%inclusion9 decks30 decks
22%synergy
Growth Spiral
27%inclusion8 decks30 decks
-18%synergy
Nature's Claim
27%inclusion8 decks30 decks
17%synergy
Sink into Stupor
27%inclusion8 decks30 decks
15%synergy
Crop Rotation
23%inclusion7 decks30 decks
10%synergy
Second Harvest
23%inclusion7 decks30 decks
17%synergy
Reality Shift
23%inclusion7 decks30 decks
9%synergy
Negate
20%inclusion6 decks30 decks
-6%synergy
Archdruid's Charm
20%inclusion6 decks30 decks
14%synergy
Force of Vigor
20%inclusion6 decks30 decks
15%synergy
Harrow
17%inclusion5 decks30 decks
5%synergy
Strix Serenade
17%inclusion5 decks30 decks
13%synergy
Return of the Wildspeaker
13%inclusion4 decks30 decks
3%synergy
Krosan Grip
13%inclusion4 decks30 decks
5%synergy
Consult the Star Charts
11%inclusion2 decks18 decks
9%synergy
Muddle the Mixture
10%inclusion3 decks30 decks
6%synergy
Eureka Moment
10%inclusion3 decks30 decks
-1%synergy
Disdainful Stroke
10%inclusion3 decks30 decks
8%synergy
Brainstorm
10%inclusion3 decks30 decks
-4%synergy
Stubborn Denial
10%inclusion3 decks30 decks
7%synergy
Tyvar's Stand
10%inclusion3 decks30 decks
7%synergy
Mindbreak Trap
10%inclusion3 decks30 decks
5%synergy
Mystic Reflection
10%inclusion3 decks30 decks
7%synergy
Return to Nature
10%inclusion3 decks30 decks
4%synergy
Resculpt
10%inclusion3 decks30 decks
4%synergy
Wash Away
10%inclusion3 decks30 decks
8%synergy
Planar Genesis
10%inclusion3 decks30 decks
-1%synergy
Tamiyo's Safekeeping
10%inclusion3 decks30 decks
4%synergy
Misdirection
10%inclusion3 decks30 decks
8%synergy
Dramatic Reversal
10%inclusion3 decks30 decks
6%synergy
Whir of Invention
6.7%inclusion2 decks30 decks
4%synergy
Mental Misstep
6.7%inclusion2 decks30 decks
1%synergy
Snakeskin Veil
6.7%inclusion2 decks30 decks
1%synergy
Sublime Epiphany
6.7%inclusion2 decks30 decks
5%synergy
Legolas's Quick Reflexes
6.7%inclusion2 decks30 decks
4%synergy
Dispel
6.7%inclusion2 decks30 decks
2%synergy
Daze
6.7%inclusion2 decks30 decks
6%synergy
Slip Out the Back
6.7%inclusion2 decks30 decks
3%synergy
Flusterstorm
6.7%inclusion2 decks30 decks
0%synergy
Filter Out
6.7%inclusion2 decks30 decks
4%synergy
Saw It Coming
6.7%inclusion2 decks30 decks
5%synergy
Cryptic Command
6.7%inclusion2 decks30 decks
5%synergy
Snap
6.7%inclusion2 decks30 decks
2%synergy
Collective Resistance
6.7%inclusion2 decks30 decks
3%synergy
Sorceries
Rampant Growth
47%inclusion14 decks30 decks
6%synergy
Skyshroud Claim
43%inclusion13 decks30 decks
34%synergy
Farseek
40%inclusion12 decks30 decks
15%synergy
Irenicus's Vile Duplication
40%inclusion12 decks30 decks
34%synergy
Triumph of the Hordes
30%inclusion9 decks30 decks
27%synergy
Finale of Devastation
30%inclusion9 decks30 decks
18%synergy
Green Sun's Zenith
23%inclusion7 decks30 decks
15%synergy
Bala Ged Recovery
20%inclusion6 decks30 decks
10%synergy
Quantum Misalignment
17%inclusion5 decks30 decks
14%synergy
Fabricate
17%inclusion5 decks30 decks
10%synergy
Windfall
13%inclusion4 decks30 decks
9%synergy
Sea Gate Restoration
13%inclusion4 decks30 decks
8%synergy
Quasiduplicate
13%inclusion4 decks30 decks
11%synergy
Rishkar's Expertise
13%inclusion4 decks30 decks
5%synergy
Explosive Vegetation
13%inclusion4 decks30 decks
8%synergy
Migration Path
13%inclusion4 decks30 decks
10%synergy
Time Warp
13%inclusion4 decks30 decks
11%synergy
Into the North
10%inclusion3 decks30 decks
9%synergy
Tempt with Discovery
10%inclusion3 decks30 decks
6%synergy
Lórien Revealed
10%inclusion3 decks30 decks
7%synergy
Natural Order
10%inclusion3 decks30 decks
9%synergy
Personal Tutor
10%inclusion3 decks30 decks
9%synergy
Search for Tomorrow
10%inclusion3 decks30 decks
5%synergy
Expropriate
10%inclusion3 decks30 decks
8%synergy
Doppelgang
10%inclusion3 decks30 decks
3%synergy
Regrowth
10%inclusion3 decks30 decks
6%synergy
Solve the Equation
10%inclusion3 decks30 decks
8%synergy
Raise the Palisade
10%inclusion3 decks30 decks
4%synergy
Eldritch Evolution
6.7%inclusion2 decks30 decks
3%synergy
Flare of Cultivation
6.7%inclusion2 decks30 decks
5%synergy
Tooth and Nail
6.7%inclusion2 decks30 decks
5%synergy
Last March of the Ents
6.7%inclusion2 decks30 decks
3%synergy
Awaken the Woods
6.7%inclusion2 decks30 decks
2%synergy
Neoform
6.7%inclusion2 decks30 decks
3%synergy
Curse of the Swine
6.7%inclusion2 decks30 decks
-4%synergy
Temporal Mastery
6.7%inclusion2 decks30 decks
5%synergy
Temporal Manipulation
6.7%inclusion2 decks30 decks
5%synergy
Drawn from Dreams
6.7%inclusion2 decks30 decks
6%synergy
Harmonize
6.7%inclusion2 decks30 decks
1%synergy
Vastwood Surge
6.7%inclusion2 decks30 decks
6%synergy
Distant Melody
6.7%inclusion2 decks30 decks
3%synergy
Ravenform
6.7%inclusion2 decks30 decks
2%synergy
Open the Way
6.7%inclusion2 decks30 decks
4%synergy
Genesis Wave
6.7%inclusion2 decks30 decks
3%synergy
Rite of Replication
6.7%inclusion2 decks30 decks
-1%synergy
Utility Artifacts
Lightning Greaves
47%inclusion14 decks30 decks
25%synergy
Swiftfoot Boots
37%inclusion11 decks30 decks
11%synergy
Helm of the Host
33%inclusion10 decks30 decks
28%synergy
The One Ring
27%inclusion8 decks30 decks
19%synergy
Static Orb
23%inclusion7 decks30 decks
23%synergy
Winter Orb
23%inclusion7 decks30 decks
23%synergy
Mirror Box
17%inclusion5 decks30 decks
13%synergy
Winter Moon
13%inclusion4 decks30 decks
13%synergy
Isochron Scepter
13%inclusion4 decks30 decks
11%synergy
Sensei's Divining Top
10%inclusion3 decks30 decks
6%synergy
Skullclamp
10%inclusion3 decks30 decks
9%synergy
Emerald Medallion
10%inclusion3 decks30 decks
7%synergy
Banner of Kinship
6.9%inclusion2 decks29 decks
5%synergy
Giant's Amulet
6.7%inclusion2 decks30 decks
6%synergy
Soul-Guide Lantern
6.7%inclusion2 decks30 decks
6%synergy
Moonsilver Key
6.7%inclusion2 decks30 decks
3%synergy
The Great Henge
6.7%inclusion2 decks30 decks
-2%synergy
Combine Chrysalis
6.7%inclusion2 decks30 decks
2%synergy
Idol of Oblivion
6.7%inclusion2 decks30 decks
3%synergy
Commander's Plate
6.7%inclusion2 decks30 decks
6%synergy
Sapphire Medallion
6.7%inclusion2 decks30 decks
3%synergy
Enchantments
Tribute to the World Tree
53%inclusion16 decks30 decks
47%synergy
Sylvan Library
50%inclusion15 decks30 decks
41%synergy
Kindred Discovery
20%inclusion6 decks30 decks
10%synergy
Utopia Sprawl
17%inclusion5 decks30 decks
10%synergy
Wild Growth
17%inclusion5 decks30 decks
8%synergy
Primal Vigor
17%inclusion5 decks30 decks
14%synergy
Defense of the Heart
17%inclusion5 decks30 decks
14%synergy
Moonlit Meditation
17%inclusion3 decks18 decks
15%synergy
Back to Basics
13%inclusion4 decks30 decks
13%synergy
Verity Circle
13%inclusion4 decks30 decks
13%synergy
Kenrith's Transformation
13%inclusion4 decks30 decks
9%synergy
Cryptolith Rite
10%inclusion3 decks30 decks
7%synergy
Exploration
10%inclusion3 decks30 decks
-3%synergy
Carpet of Flowers
10%inclusion3 decks30 decks
7%synergy
Imprisoned in the Moon
10%inclusion3 decks30 decks
6%synergy
Unnatural Growth
10%inclusion3 decks30 decks
7%synergy
Song of the Dryads
10%inclusion3 decks30 decks
8%synergy
Opposition
10%inclusion3 decks30 decks
10%synergy
Paradox Haze
10%inclusion3 decks30 decks
10%synergy
Impostor Syndrome
7.1%inclusion1 decks14 decks
5%synergy
Wizard Class
6.7%inclusion2 decks30 decks
1%synergy
Pattern of Rebirth
6.7%inclusion2 decks30 decks
6%synergy
Stasis
6.7%inclusion2 decks30 decks
6%synergy
Dismiss into Dream
6.7%inclusion2 decks30 decks
6%synergy
Propaganda
6.7%inclusion2 decks30 decks
0%synergy
Growing Rites of Itlimoc
6.7%inclusion2 decks30 decks
1%synergy
Planeswalkers
Oko, Thief of Crowns
50%inclusion15 decks30 decks
43%synergy
Narset, Parter of Veils
10%inclusion3 decks30 decks
9%synergy
Tezzeret the Seeker
6.7%inclusion2 decks30 decks
3%synergy
Utility Lands
Boseiju, Who Endures
63%inclusion19 decks30 decks
41%synergy
Reliquary Tower
60%inclusion18 decks30 decks
10%synergy
Mistrise Village
37%inclusion10 decks27 decks
26%synergy
Command Beacon
37%inclusion11 decks30 decks
33%synergy
Otawara, Soaring City
37%inclusion11 decks30 decks
18%synergy
Yavimaya, Cradle of Growth
33%inclusion10 decks30 decks
11%synergy
Evendo, Waking Haven
22%inclusion4 decks18 decks
17%synergy
Mystic Sanctuary
20%inclusion6 decks30 decks
7%synergy
Urza's Saga
17%inclusion5 decks30 decks
11%synergy
Gaea's Cradle
17%inclusion5 decks30 decks
9%synergy
Three Tree City
17%inclusion5 decks30 decks
12%synergy
Castle Garenbrig
17%inclusion5 decks30 decks
12%synergy
Minamo, School at Water's Edge
10%inclusion3 decks30 decks
4%synergy
Alchemist's Refuge
10%inclusion3 decks30 decks
-7%synergy
Mosswort Bridge
10%inclusion3 decks30 decks
-7%synergy
Thespian's Stage
10%inclusion3 decks30 decks
3%synergy
Temple of the False God
10%inclusion3 decks30 decks
-6%synergy
Dryad Arbor
10%inclusion3 decks30 decks
4%synergy
Rogue's Passage
10%inclusion3 decks30 decks
-12%synergy
Rivendell
6.7%inclusion2 decks30 decks
1%synergy
Boseiju, Who Shelters All
6.7%inclusion2 decks30 decks
6%synergy
Mirrorpool
6.7%inclusion2 decks30 decks
6%synergy
Scavenger Grounds
6.7%inclusion2 decks30 decks
2%synergy
Crystal Vein
6.7%inclusion2 decks30 decks
6%synergy
Emergence Zone
6.7%inclusion2 decks30 decks
3%synergy
Shifting Woodland
6.7%inclusion2 decks30 decks
0%synergy
Field of the Dead
6.7%inclusion2 decks30 decks
1%synergy
Cephalid Coliseum
6.7%inclusion2 decks30 decks
2%synergy
Homeward Path
6.7%inclusion2 decks30 decks
5%synergy
Castle Vantress
6.7%inclusion2 decks30 decks
0%synergy
Mana Artifacts
Sol Ring
93%inclusion28 decks30 decks
13%synergy
Arcane Signet
87%inclusion26 decks30 decks
24%synergy
Thought Vessel
43%inclusion13 decks30 decks
23%synergy
Talisman of Curiosity
37%inclusion11 decks30 decks
15%synergy
Simic Signet
33%inclusion10 decks30 decks
1%synergy
Lotus Petal
17%inclusion5 decks30 decks
10%synergy
Basalt Monolith
13%inclusion4 decks30 decks
6%synergy
Fellwar Stone
13%inclusion4 decks30 decks
4%synergy
Chrome Mox
10%inclusion3 decks30 decks
3%synergy
Mind Stone
6.7%inclusion2 decks30 decks
2%synergy
Lands
Breeding Pool
93%inclusion28 decks30 decks
48%synergy
Command Tower
90%inclusion27 decks30 decks
5%synergy
Forest
83%inclusion25 decks30 decks
-12%synergy
Rejuvenating Springs
83%inclusion25 decks30 decks
39%synergy
Island
80%inclusion24 decks30 decks
-15%synergy
Misty Rainforest
70%inclusion21 decks30 decks
39%synergy
Hinterland Harbor
70%inclusion21 decks30 decks
11%synergy
Yavimaya Coast
63%inclusion19 decks30 decks
11%synergy
Dreamroot Cascade
60%inclusion18 decks30 decks
18%synergy
Barkchannel Pathway
53%inclusion16 decks30 decks
33%synergy
Simic Growth Chamber
50%inclusion15 decks30 decks
2%synergy
Flooded Grove
47%inclusion14 decks30 decks
6%synergy
Waterlogged Grove
37%inclusion11 decks30 decks
16%synergy
Prismatic Vista
33%inclusion10 decks30 decks
26%synergy
Willowrush Verge
31%inclusion9 decks29 decks
15%synergy
Tropical Island
30%inclusion9 decks30 decks
16%synergy
Hedge Maze
30%inclusion9 decks30 decks
10%synergy
Fabled Passage
27%inclusion8 decks30 decks
12%synergy
Exotic Orchard
27%inclusion8 decks30 decks
3%synergy
Windswept Heath
27%inclusion8 decks30 decks
16%synergy
Sink into Stupor
27%inclusion8 decks30 decks
15%synergy
Snow-Covered Island
23%inclusion7 decks30 decks
16%synergy
Snow-Covered Forest
23%inclusion7 decks30 decks
17%synergy
Rimewood Falls
23%inclusion7 decks30 decks
14%synergy
Flooded Strand
23%inclusion7 decks30 decks
12%synergy
Vineglimmer Snarl
20%inclusion6 decks30 decks
-19%synergy
Verdant Catacombs
20%inclusion6 decks30 decks
10%synergy
Scalding Tarn
20%inclusion6 decks30 decks
10%synergy
Mana Confluence
20%inclusion6 decks30 decks
14%synergy
Bala Ged Recovery
20%inclusion6 decks30 decks
10%synergy
Myriad Landscape
17%inclusion5 decks30 decks
-5%synergy
Wooded Foothills
17%inclusion5 decks30 decks
7%synergy
Botanical Sanctum
17%inclusion5 decks30 decks
4%synergy
Polluted Delta
17%inclusion5 decks30 decks
6%synergy
City of Brass
17%inclusion5 decks30 decks
11%synergy
Sea Gate Restoration
13%inclusion4 decks30 decks
8%synergy
Reflecting Pool
13%inclusion4 decks30 decks
10%synergy
Temple of Mystery
13%inclusion4 decks30 decks
-25%synergy
Glasspool Mimic
13%inclusion4 decks30 decks
9%synergy
Tangled Islet
10%inclusion3 decks30 decks
-6%synergy
Hydroelectric Specimen
10%inclusion3 decks30 decks
4%synergy
Cavern of Souls
10%inclusion3 decks30 decks
4%synergy
Evolving Wilds
10%inclusion3 decks30 decks
-15%synergy
Vibrant Cityscape
7.7%inclusion1 decks13 decks
6%synergy
Terramorphic Expanse
6.7%inclusion2 decks30 decks
-13%synergy
Urza's Cave
6.7%inclusion2 decks30 decks
2%synergy
Gemstone Caverns
6.7%inclusion2 decks30 decks
1%synergy