Koma, Cosmos Serpent (Commander) - Upgraded Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #300
25decks
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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Shared Roots
18%inclusion2 decks11 decks
15%synergy
Spirit Water Revival
9.1%inclusion1 decks11 decks
8%synergy
Badgermole Cub
8.3%inclusion1 decks12 decks
4%synergy
High Synergy Cards
Elemental Bond
88%inclusion22 decks25 decks
82%synergy
Whelming Wave
84%inclusion21 decks25 decks
73%synergy
Adrix and Nev, Twincasters
76%inclusion19 decks25 decks
68%synergy
Spark Double
72%inclusion18 decks25 decks
62%synergy
Irenicus's Vile Duplication
64%inclusion16 decks25 decks
58%synergy
Tribute to the World Tree
64%inclusion16 decks25 decks
58%synergy
Parallel Lives
56%inclusion14 decks25 decks
50%synergy
Serpent of Yawning Depths
56%inclusion14 decks25 decks
50%synergy
Farseek
68%inclusion17 decks25 decks
43%synergy
Starwinder
50%inclusion8 decks16 decks
43%synergy
Top Cards
Cultivate
80%inclusion20 decks25 decks
33%synergy
Counterspell
80%inclusion20 decks25 decks
30%synergy
Rampant Growth
68%inclusion17 decks25 decks
27%synergy
An Offer You Can't Refuse
64%inclusion16 decks25 decks
41%synergy
Nature's Lore
64%inclusion16 decks25 decks
34%synergy
Kodama's Reach
60%inclusion15 decks25 decks
24%synergy
Beast Within
60%inclusion15 decks25 decks
10%synergy
Koma, World-Eater
56%inclusion14 decks25 decks
43%synergy
Elvish Mystic
56%inclusion14 decks25 decks
32%synergy
Arcane Denial
56%inclusion14 decks25 decks
34%synergy
Game Changers
Cyclonic Rift
44%inclusion11 decks25 decks
18%synergy
Seedborn Muse
32%inclusion8 decks25 decks
16%synergy
Fierce Guardianship
32%inclusion8 decks25 decks
15%synergy
Rhystic Study
28%inclusion7 decks25 decks
6%synergy
Consecrated Sphinx
12%inclusion3 decks25 decks
3%synergy
Force of Will
12%inclusion3 decks25 decks
2%synergy
The One Ring
8.0%inclusion2 decks25 decks
0%synergy
Creatures
Aesi, Tyrant of Gyre Strait
52%inclusion13 decks25 decks
35%synergy
Junk Winder
48%inclusion12 decks25 decks
41%synergy
Sakashima of a Thousand Faces
48%inclusion12 decks25 decks
43%synergy
Summon: Leviathan
45%inclusion9 decks20 decks
38%synergy
Llanowar Elves
44%inclusion11 decks25 decks
16%synergy
Sakashima the Impostor
44%inclusion11 decks25 decks
41%synergy
Arixmethes, Slumbering Isle
44%inclusion11 decks25 decks
31%synergy
Sakura-Tribe Elder
44%inclusion11 decks25 decks
25%synergy
Spawning Kraken
44%inclusion11 decks25 decks
37%synergy
Eternal Witness
40%inclusion10 decks25 decks
19%synergy
Craterhoof Behemoth
40%inclusion10 decks25 decks
31%synergy
Tatyova, Benthic Druid
36%inclusion9 decks25 decks
5%synergy
Enduring Curiosity
36%inclusion9 decks25 decks
33%synergy
Birds of Paradise
36%inclusion9 decks25 decks
8%synergy
Fyndhorn Elves
32%inclusion8 decks25 decks
16%synergy
Garruk's Packleader
28%inclusion7 decks25 decks
26%synergy
Roaming Throne
28%inclusion7 decks25 decks
20%synergy
Scourge of Fleets
24%inclusion6 decks25 decks
16%synergy
Hullbreaker Horror
24%inclusion6 decks25 decks
6%synergy
Uro, Titan of Nature's Wrath
24%inclusion6 decks25 decks
14%synergy
Octomancer
20%inclusion5 decks25 decks
15%synergy
Fanatic of Rhonas
20%inclusion5 decks25 decks
14%synergy
Disciple of Freyalise
16%inclusion4 decks25 decks
11%synergy
Enduring Vitality
16%inclusion4 decks25 decks
9%synergy
Murkfiend Liege
16%inclusion4 decks25 decks
1%synergy
Slinn Voda, the Rising Deep
16%inclusion4 decks25 decks
9%synergy
Archetype of Imagination
16%inclusion4 decks25 decks
12%synergy
Solemn Simulacrum
12%inclusion3 decks25 decks
5%synergy
Curiosity Crafter
12%inclusion3 decks25 decks
9%synergy
Circle of Dreams Druid
12%inclusion3 decks25 decks
10%synergy
Tangled Florahedron
12%inclusion3 decks25 decks
10%synergy
Vizier of Many Faces
12%inclusion3 decks25 decks
11%synergy
Hydroelectric Specimen
12%inclusion3 decks25 decks
6%synergy
Lotus Cobra
12%inclusion3 decks25 decks
-2%synergy
Tireless Provisioner
12%inclusion3 decks25 decks
-3%synergy
Gala Greeters
12%inclusion3 decks25 decks
10%synergy
Oviya, Automech Artisan
8.3%inclusion2 decks24 decks
6%synergy
Maraleaf Pixie
8.0%inclusion2 decks25 decks
2%synergy
Icebreaker Kraken
8.0%inclusion2 decks25 decks
7%synergy
Reclamation Sage
8.0%inclusion2 decks25 decks
-6%synergy
Insidious Fungus
8.0%inclusion2 decks25 decks
6%synergy
Troyan, Gutsy Explorer
8.0%inclusion2 decks25 decks
5%synergy
Brinelin, the Moon Kraken
8.0%inclusion2 decks25 decks
4%synergy
Kiora's Follower
8.0%inclusion2 decks25 decks
-7%synergy
Yeva, Nature's Herald
8.0%inclusion2 decks25 decks
8%synergy
Phyrexian Metamorph
8.0%inclusion2 decks25 decks
-1%synergy
Wayward Swordtooth
8.0%inclusion2 decks25 decks
4%synergy
Saryth, the Viper's Fang
8.0%inclusion2 decks25 decks
6%synergy
Fierce Empath
8.0%inclusion2 decks25 decks
5%synergy
Stormsurge Kraken
8.0%inclusion2 decks25 decks
4%synergy
Instants
Growth Spiral
52%inclusion13 decks25 decks
7%synergy
Rapid Hybridization
48%inclusion12 decks25 decks
22%synergy
Negate
44%inclusion11 decks25 decks
18%synergy
Pongify
36%inclusion9 decks25 decks
11%synergy
Heroic Intervention
36%inclusion9 decks25 decks
6%synergy
Return of the Wildspeaker
36%inclusion9 decks25 decks
26%synergy
Planar Genesis
36%inclusion9 decks25 decks
25%synergy
Double Major
36%inclusion9 decks25 decks
28%synergy
Stubborn Denial
32%inclusion8 decks25 decks
29%synergy
Harrow
32%inclusion8 decks25 decks
20%synergy
Reality Shift
32%inclusion8 decks25 decks
17%synergy
Mana Drain
32%inclusion8 decks25 decks
16%synergy
Entish Restoration
28%inclusion7 decks25 decks
19%synergy
Swan Song
28%inclusion7 decks25 decks
9%synergy
Tamiyo's Safekeeping
28%inclusion7 decks25 decks
22%synergy
Nature's Claim
24%inclusion6 decks25 decks
14%synergy
Plasm Capture
20%inclusion5 decks25 decks
17%synergy
Brainstorm
20%inclusion5 decks25 decks
6%synergy
Krosan Grip
20%inclusion5 decks25 decks
12%synergy
Second Harvest
20%inclusion5 decks25 decks
14%synergy
Sink into Stupor
20%inclusion5 decks25 decks
8%synergy
Rewind
20%inclusion5 decks25 decks
17%synergy
Eureka Moment
16%inclusion4 decks25 decks
5%synergy
Frantic Search
16%inclusion4 decks25 decks
10%synergy
Snakeskin Veil
16%inclusion4 decks25 decks
10%synergy
Three Steps Ahead
16%inclusion4 decks25 decks
13%synergy
Decisive Denial
16%inclusion4 decks25 decks
11%synergy
Chord of Calling
16%inclusion4 decks25 decks
8%synergy
Resculpt
16%inclusion4 decks25 decks
10%synergy
Slip Out the Back
16%inclusion4 decks25 decks
12%synergy
Collective Resistance
16%inclusion4 decks25 decks
12%synergy
Voidslime
16%inclusion4 decks25 decks
11%synergy
Auroral Procession
14%inclusion3 decks22 decks
10%synergy
Muddle the Mixture
12%inclusion3 decks25 decks
8%synergy
Archdruid's Charm
12%inclusion3 decks25 decks
6%synergy
Tyvar's Stand
12%inclusion3 decks25 decks
9%synergy
Flare of Denial
12%inclusion3 decks25 decks
9%synergy
Aetherize
12%inclusion3 decks25 decks
0%synergy
Disallow
12%inclusion3 decks25 decks
10%synergy
Joint Exploration
12%inclusion3 decks25 decks
6%synergy
Force of Negation
12%inclusion3 decks25 decks
3%synergy
Simic Charm
12%inclusion3 decks25 decks
4%synergy
Abjure
12%inclusion3 decks25 decks
11%synergy
Disdainful Stroke
8.0%inclusion2 decks25 decks
6%synergy
Fog
8.0%inclusion2 decks25 decks
5%synergy
Mystic Reflection
8.0%inclusion2 decks25 decks
5%synergy
Sublime Epiphany
8.0%inclusion2 decks25 decks
6%synergy
Force of Vigor
8.0%inclusion2 decks25 decks
3%synergy
Roiling Regrowth
8.0%inclusion2 decks25 decks
4%synergy
Dispel
8.0%inclusion2 decks25 decks
3%synergy
Sorceries
Three Visits
52%inclusion13 decks25 decks
29%synergy
Skyshroud Claim
48%inclusion12 decks25 decks
39%synergy
Quantum Misalignment
36%inclusion9 decks25 decks
33%synergy
Explore
24%inclusion6 decks25 decks
4%synergy
Migration Path
24%inclusion6 decks25 decks
21%synergy
Ponder
16%inclusion4 decks25 decks
9%synergy
Bridgeworks Battle
16%inclusion4 decks25 decks
11%synergy
Urban Evolution
16%inclusion4 decks25 decks
6%synergy
Bala Ged Recovery
16%inclusion4 decks25 decks
6%synergy
Overwhelming Stampede
16%inclusion4 decks25 decks
4%synergy
Regrowth
16%inclusion4 decks25 decks
12%synergy
Replication Technique
12%inclusion3 decks25 decks
9%synergy
Consuming Tide
12%inclusion3 decks25 decks
10%synergy
Into the North
12%inclusion3 decks25 decks
11%synergy
Triumph of the Hordes
12%inclusion3 decks25 decks
9%synergy
Lórien Revealed
12%inclusion3 decks25 decks
9%synergy
Harmonize
12%inclusion3 decks25 decks
6%synergy
Preordain
12%inclusion3 decks25 decks
4%synergy
Shamanic Revelation
12%inclusion3 decks25 decks
7%synergy
Windfall
8.0%inclusion2 decks25 decks
4%synergy
Flare of Cultivation
8.0%inclusion2 decks25 decks
6%synergy
Stolen Identity
8.0%inclusion2 decks25 decks
7%synergy
Last March of the Ents
8.0%inclusion2 decks25 decks
4%synergy
Turntimber Symbiosis
8.0%inclusion2 decks25 decks
6%synergy
Sea Gate Restoration
8.0%inclusion2 decks25 decks
3%synergy
Curse of the Swine
8.0%inclusion2 decks25 decks
-3%synergy
Rally the Galadhrim
8.0%inclusion2 decks25 decks
7%synergy
Broken Bond
8.0%inclusion2 decks25 decks
3%synergy
Rishkar's Expertise
8.0%inclusion2 decks25 decks
0%synergy
Search for Tomorrow
8.0%inclusion2 decks25 decks
3%synergy
Ravenform
8.0%inclusion2 decks25 decks
4%synergy
Open the Way
8.0%inclusion2 decks25 decks
5%synergy
Analyze the Pollen
8.0%inclusion2 decks25 decks
7%synergy
Glimpse the Core
8.0%inclusion2 decks25 decks
7%synergy
Rite of Replication
8.0%inclusion2 decks25 decks
1%synergy
Utility Artifacts
Lightning Greaves
44%inclusion11 decks25 decks
22%synergy
Swiftfoot Boots
28%inclusion7 decks25 decks
2%synergy
Mirror Box
24%inclusion6 decks25 decks
21%synergy
Emerald Medallion
24%inclusion6 decks25 decks
21%synergy
Helm of the Host
20%inclusion5 decks25 decks
15%synergy
Combine Chrysalis
16%inclusion4 decks25 decks
12%synergy
Sapphire Medallion
16%inclusion4 decks25 decks
13%synergy
Proteus Staff
8.0%inclusion2 decks25 decks
8%synergy
Bident of Thassa
8.0%inclusion2 decks25 decks
1%synergy
Enchantments
Kindred Discovery
52%inclusion13 decks25 decks
42%synergy
Doubling Season
44%inclusion11 decks25 decks
34%synergy
Mystic Remora
32%inclusion8 decks25 decks
17%synergy
Verity Circle
24%inclusion6 decks25 decks
23%synergy
Wild Growth
24%inclusion6 decks25 decks
15%synergy
Primal Vigor
20%inclusion5 decks25 decks
17%synergy
Growing Rites of Itlimoc
20%inclusion5 decks25 decks
14%synergy
Cryptolith Rite
16%inclusion4 decks25 decks
13%synergy
Wilderness Reclamation
16%inclusion4 decks25 decks
7%synergy
Opposition
16%inclusion4 decks25 decks
16%synergy
Propaganda
16%inclusion4 decks25 decks
9%synergy
Impostor Syndrome
13%inclusion2 decks15 decks
11%synergy
Dismiss into Dream
12%inclusion3 decks25 decks
12%synergy
Utopia Sprawl
8.0%inclusion2 decks25 decks
1%synergy
Exploration
8.0%inclusion2 decks25 decks
-5%synergy
Beastmaster Ascension
8.0%inclusion2 decks25 decks
5%synergy
Garruk's Uprising
8.0%inclusion2 decks25 decks
-8%synergy
Imprisoned in the Moon
8.0%inclusion2 decks25 decks
4%synergy
Mana Reflection
8.0%inclusion2 decks25 decks
3%synergy
Kenrith's Transformation
8.0%inclusion2 decks25 decks
4%synergy
Khalni Heart Expedition
8.0%inclusion2 decks25 decks
4%synergy
Paradox Haze
8.0%inclusion2 decks25 decks
8%synergy
Defense of the Heart
8.0%inclusion2 decks25 decks
6%synergy
Moonlit Meditation
6.3%inclusion1 decks16 decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
28%inclusion7 decks25 decks
21%synergy
Kiora, Master of the Depths
8.0%inclusion2 decks25 decks
6%synergy
Kiora, the Crashing Wave
8.0%inclusion2 decks25 decks
5%synergy
Utility Lands
Reliquary Tower
52%inclusion13 decks25 decks
2%synergy
Mystic Sanctuary
36%inclusion9 decks25 decks
23%synergy
Temple of the False God
36%inclusion9 decks25 decks
20%synergy
Alchemist's Refuge
24%inclusion6 decks25 decks
7%synergy
Mosswort Bridge
24%inclusion6 decks25 decks
7%synergy
Command Beacon
24%inclusion6 decks25 decks
20%synergy
Yavimaya, Cradle of Growth
24%inclusion6 decks25 decks
2%synergy
Boseiju, Who Endures
24%inclusion6 decks25 decks
2%synergy
Otawara, Soaring City
24%inclusion6 decks25 decks
5%synergy
Mistrise Village
14%inclusion3 decks22 decks
3%synergy
Evendo, Waking Haven
13%inclusion2 decks16 decks
7%synergy
Thespian's Stage
12%inclusion3 decks25 decks
5%synergy
Dark Depths
12%inclusion3 decks25 decks
5%synergy
Castle Vantress
12%inclusion3 decks25 decks
5%synergy
Three Tree City
12%inclusion3 decks25 decks
7%synergy
Castle Garenbrig
12%inclusion3 decks25 decks
7%synergy
Bonders' Enclave
12%inclusion3 decks25 decks
10%synergy
Rivendell
8.0%inclusion2 decks25 decks
2%synergy
War Room
8.0%inclusion2 decks25 decks
7%synergy
Lumbering Falls
8.0%inclusion2 decks25 decks
1%synergy
Oran-Rief, the Vastwood
8.0%inclusion2 decks25 decks
3%synergy
Rogue's Passage
8.0%inclusion2 decks25 decks
-14%synergy
Mana Artifacts
Sol Ring
92%inclusion23 decks25 decks
11%synergy
Arcane Signet
68%inclusion17 decks25 decks
5%synergy
Talisman of Curiosity
32%inclusion8 decks25 decks
10%synergy
Simic Signet
24%inclusion6 decks25 decks
-8%synergy
Thought Vessel
24%inclusion6 decks25 decks
4%synergy
Fellwar Stone
16%inclusion4 decks25 decks
6%synergy
Thran Dynamo
16%inclusion4 decks25 decks
13%synergy
Replicating Ring
8.0%inclusion2 decks25 decks
6%synergy
Lands
Command Tower
96%inclusion24 decks25 decks
11%synergy
Forest
92%inclusion23 decks25 decks
-3%synergy
Island
92%inclusion23 decks25 decks
-3%synergy
Hinterland Harbor
84%inclusion21 decks25 decks
25%synergy
Yavimaya Coast
80%inclusion20 decks25 decks
28%synergy
Breeding Pool
56%inclusion14 decks25 decks
10%synergy
Vineglimmer Snarl
56%inclusion14 decks25 decks
17%synergy
Dreamroot Cascade
56%inclusion14 decks25 decks
14%synergy
Temple of Mystery
52%inclusion13 decks25 decks
14%synergy
Rejuvenating Springs
52%inclusion13 decks25 decks
8%synergy
Flooded Grove
48%inclusion12 decks25 decks
7%synergy
Simic Growth Chamber
40%inclusion10 decks25 decks
-8%synergy
Misty Rainforest
36%inclusion9 decks25 decks
5%synergy
Barkchannel Pathway
36%inclusion9 decks25 decks
16%synergy
Waterlogged Grove
36%inclusion9 decks25 decks
15%synergy
Hedge Maze
36%inclusion9 decks25 decks
16%synergy
Exotic Orchard
28%inclusion7 decks25 decks
4%synergy
Tangled Islet
28%inclusion7 decks25 decks
12%synergy
Willowrush Verge
25%inclusion6 decks24 decks
9%synergy
Myriad Landscape
24%inclusion6 decks25 decks
2%synergy
Snow-Covered Forest
20%inclusion5 decks25 decks
13%synergy
Rimewood Falls
20%inclusion5 decks25 decks
11%synergy
Evolving Wilds
20%inclusion5 decks25 decks
-5%synergy
Sink into Stupor
20%inclusion5 decks25 decks
8%synergy
Fabled Passage
16%inclusion4 decks25 decks
2%synergy
Disciple of Freyalise
16%inclusion4 decks25 decks
11%synergy
Littjara Mirrorlake
16%inclusion4 decks25 decks
12%synergy
Snow-Covered Island
16%inclusion4 decks25 decks
9%synergy
Tropical Island
16%inclusion4 decks25 decks
2%synergy
Bridgeworks Battle
16%inclusion4 decks25 decks
11%synergy
Path of Ancestry
16%inclusion4 decks25 decks
-1%synergy
Bala Ged Recovery
16%inclusion4 decks25 decks
6%synergy
Tangled Florahedron
12%inclusion3 decks25 decks
10%synergy
Hydroelectric Specimen
12%inclusion3 decks25 decks
6%synergy
Blighted Woodland
8.0%inclusion2 decks25 decks
1%synergy
Prismatic Vista
8.0%inclusion2 decks25 decks
1%synergy
Windswept Heath
8.0%inclusion2 decks25 decks
-2%synergy
Turntimber Symbiosis
8.0%inclusion2 decks25 decks
6%synergy
Sea Gate Restoration
8.0%inclusion2 decks25 decks
3%synergy
Overflowing Basin
8.0%inclusion2 decks25 decks
-11%synergy
Wooded Foothills
8.0%inclusion2 decks25 decks
-2%synergy
Verdant Catacombs
8.0%inclusion2 decks25 decks
-2%synergy
Botanical Sanctum
8.0%inclusion2 decks25 decks
-5%synergy
Demolition Field
8.0%inclusion2 decks25 decks
5%synergy
Plaza of Heroes
8.0%inclusion2 decks25 decks
7%synergy
Silundi Vision
8.0%inclusion2 decks25 decks
7%synergy
Glasspool Mimic
8.0%inclusion2 decks25 decks
4%synergy
Thornwood Falls
8.0%inclusion2 decks25 decks
-10%synergy
Polluted Delta
8.0%inclusion2 decks25 decks
-2%synergy
Flooded Strand
8.0%inclusion2 decks25 decks
-3%synergy
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