Koma, Cosmos Serpent (Commander) - Budget Upgraded

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
35decks
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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The Legend of Kyoshi
13%inclusion1 decks8 decks
11%synergy
Secret of Bloodbending
11%inclusion1 decks9 decks
11%synergy
Seismic Sense
11%inclusion1 decks9 decks
11%synergy
Shared Roots
11%inclusion1 decks9 decks
8%synergy
Bender's Waterskin
7.7%inclusion1 decks13 decks
7%synergy
High Synergy Cards
Whelming Wave
74%inclusion26 decks35 decks
63%synergy
Arixmethes, Slumbering Isle
57%inclusion20 decks35 decks
44%synergy
Junk Winder
49%inclusion17 decks35 decks
42%synergy
Elemental Bond
46%inclusion16 decks35 decks
40%synergy
Koma, World-Eater
53%inclusion18 decks34 decks
40%synergy
Adrix and Nev, Twincasters
43%inclusion15 decks35 decks
34%synergy
Scourge of Fleets
40%inclusion14 decks35 decks
32%synergy
Slinn Voda, the Rising Deep
37%inclusion13 decks35 decks
31%synergy
Reality Shift
43%inclusion15 decks35 decks
28%synergy
Murkfiend Liege
43%inclusion15 decks35 decks
28%synergy
Top Cards
Rampant Growth
66%inclusion23 decks35 decks
25%synergy
Counterspell
60%inclusion21 decks35 decks
10%synergy
Tatyova, Benthic Druid
54%inclusion19 decks35 decks
23%synergy
Kodama's Reach
51%inclusion18 decks35 decks
15%synergy
Llanowar Elves
49%inclusion17 decks35 decks
21%synergy
Cultivate
49%inclusion17 decks35 decks
2%synergy
Growth Spiral
49%inclusion17 decks35 decks
4%synergy
Beast Within
46%inclusion16 decks35 decks
-4%synergy
Sakura-Tribe Elder
40%inclusion14 decks35 decks
21%synergy
Negate
37%inclusion13 decks35 decks
11%synergy
Game Changers
Seedborn Muse
11%inclusion4 decks35 decks
-4%synergy
Thassa's Oracle
5.7%inclusion2 decks35 decks
0%synergy
Creatures
Rampaging Baloths
37%inclusion13 decks35 decks
20%synergy
Aesi, Tyrant of Gyre Strait
37%inclusion13 decks35 decks
20%synergy
Coiling Oracle
37%inclusion13 decks35 decks
24%synergy
Esix, Fractal Bloom
31%inclusion11 decks35 decks
28%synergy
Garruk's Packleader
29%inclusion10 decks35 decks
26%synergy
Stormtide Leviathan
29%inclusion10 decks35 decks
23%synergy
Elvish Mystic
29%inclusion10 decks35 decks
5%synergy
Nadir Kraken
29%inclusion10 decks35 decks
24%synergy
Reclamation Sage
26%inclusion9 decks35 decks
11%synergy
Simic Sky Swallower
26%inclusion9 decks35 decks
21%synergy
Archetype of Imagination
26%inclusion9 decks35 decks
21%synergy
Summon: Leviathan
24%inclusion6 decks25 decks
17%synergy
Starwinder
24%inclusion4 decks17 decks
17%synergy
Fyndhorn Elves
23%inclusion8 decks35 decks
7%synergy
Avenger of Zendikar
23%inclusion8 decks35 decks
5%synergy
Inkwell Leviathan
23%inclusion8 decks35 decks
19%synergy
Eternal Witness
23%inclusion8 decks35 decks
2%synergy
Spawning Kraken
20%inclusion7 decks35 decks
13%synergy
Tromokratis
20%inclusion7 decks35 decks
15%synergy
Hullbreaker Horror
20%inclusion7 decks35 decks
2%synergy
Rashmi, Eternities Crafter
17%inclusion6 decks35 decks
14%synergy
Ohran Frostfang
17%inclusion6 decks35 decks
13%synergy
Troyan, Gutsy Explorer
17%inclusion6 decks35 decks
14%synergy
Octomancer
17%inclusion6 decks35 decks
12%synergy
Xolatoyac, the Smiling Flood
17%inclusion6 decks35 decks
10%synergy
Fierce Empath
17%inclusion6 decks35 decks
14%synergy
Stormsurge Kraken
14%inclusion5 decks35 decks
10%synergy
Spark Double
14%inclusion5 decks35 decks
5%synergy
Scute Swarm
14%inclusion5 decks35 decks
-7%synergy
Topiary Stomper
14%inclusion5 decks35 decks
12%synergy
Mystic Snake
14%inclusion5 decks35 decks
11%synergy
Inga and Esika
14%inclusion5 decks35 decks
11%synergy
Trygon Predator
14%inclusion5 decks35 decks
8%synergy
Farhaven Elf
14%inclusion5 decks35 decks
10%synergy
Saryth, the Viper's Fang
14%inclusion5 decks35 decks
13%synergy
Chasm Skulker
14%inclusion5 decks35 decks
8%synergy
Serpent of Yawning Depths
14%inclusion5 decks35 decks
8%synergy
Sin, Unending Cataclysm
12%inclusion3 decks25 decks
9%synergy
Kiora, the Rising Tide
12%inclusion4 decks34 decks
9%synergy
Gyre Engineer
11%inclusion4 decks35 decks
9%synergy
End-Raze Forerunners
11%inclusion4 decks35 decks
7%synergy
Augur of Autumn
11%inclusion4 decks35 decks
6%synergy
Champion of Lambholt
11%inclusion4 decks35 decks
6%synergy
Brinelin, the Moon Kraken
11%inclusion4 decks35 decks
7%synergy
Elder Deep-Fiend
11%inclusion4 decks35 decks
10%synergy
Ramunap Excavator
11%inclusion4 decks35 decks
0%synergy
Hydroid Krasis
11%inclusion4 decks35 decks
3%synergy
Frilled Mystic
11%inclusion4 decks35 decks
8%synergy
Yavimaya Elder
11%inclusion4 decks35 decks
9%synergy
Colossal Skyturtle
11%inclusion4 decks35 decks
6%synergy
Instants
Return of the Wildspeaker
29%inclusion10 decks35 decks
18%synergy
Harrow
29%inclusion10 decks35 decks
17%synergy
Aetherize
29%inclusion10 decks35 decks
17%synergy
An Offer You Can't Refuse
26%inclusion9 decks35 decks
3%synergy
Planar Genesis
23%inclusion8 decks35 decks
12%synergy
Simic Charm
20%inclusion7 decks35 decks
12%synergy
Decisive Denial
17%inclusion6 decks35 decks
12%synergy
Return to Nature
17%inclusion6 decks35 decks
12%synergy
Perplexing Test
17%inclusion6 decks35 decks
13%synergy
Eureka Moment
17%inclusion6 decks35 decks
6%synergy
Brainstorm
17%inclusion6 decks35 decks
3%synergy
Arcane Denial
17%inclusion6 decks35 decks
-5%synergy
Double Major
17%inclusion6 decks35 decks
9%synergy
Voidslime
14%inclusion5 decks35 decks
9%synergy
Pongify
14%inclusion5 decks35 decks
-11%synergy
Plasm Capture
14%inclusion5 decks35 decks
11%synergy
Rapid Hybridization
14%inclusion5 decks35 decks
-12%synergy
Second Harvest
14%inclusion5 decks35 decks
8%synergy
Prishe's Wanderings
13%inclusion3 decks24 decks
12%synergy
Refute
12%inclusion4 decks34 decks
10%synergy
Sublime Epiphany
11%inclusion4 decks35 decks
9%synergy
Nature's Claim
11%inclusion4 decks35 decks
1%synergy
Entish Restoration
11%inclusion4 decks35 decks
2%synergy
Heroic Intervention
11%inclusion4 decks35 decks
-19%synergy
Fog
11%inclusion4 decks35 decks
8%synergy
Roiling Regrowth
11%inclusion4 decks35 decks
7%synergy
Rewind
11%inclusion4 decks35 decks
9%synergy
Spell Pierce
11%inclusion4 decks35 decks
8%synergy
High Tide
11%inclusion4 decks35 decks
9%synergy
Snakeskin Veil
11%inclusion4 decks35 decks
6%synergy
Slip Out the Back
11%inclusion4 decks35 decks
8%synergy
Auroral Procession
10%inclusion3 decks29 decks
7%synergy
Frantic Search
8.6%inclusion3 decks35 decks
3%synergy
Biomass Mutation
8.6%inclusion3 decks35 decks
5%synergy
Essence Scatter
8.6%inclusion3 decks35 decks
7%synergy
Mystic Reflection
8.6%inclusion3 decks35 decks
6%synergy
Joint Exploration
8.6%inclusion3 decks35 decks
3%synergy
Into the Roil
8.6%inclusion3 decks35 decks
7%synergy
Unwind
8.6%inclusion3 decks35 decks
6%synergy
Krosan Grip
8.6%inclusion3 decks35 decks
1%synergy
Tyvar's Stand
8.6%inclusion3 decks35 decks
6%synergy
Barrier Breach
8.6%inclusion3 decks35 decks
8%synergy
Opt
8.6%inclusion3 decks35 decks
1%synergy
Collective Resistance
8.6%inclusion3 decks35 decks
5%synergy
Mystic Confluence
8.6%inclusion3 decks35 decks
6%synergy
Disdainful Stroke
8.6%inclusion3 decks35 decks
7%synergy
Mystical Dispute
8.6%inclusion3 decks35 decks
8%synergy
Cancel
8.6%inclusion3 decks35 decks
6%synergy
Resculpt
8.6%inclusion3 decks35 decks
2%synergy
Cryptic Command
8.6%inclusion3 decks35 decks
7%synergy
Sorceries
Explore
37%inclusion13 decks35 decks
17%synergy
Farseek
34%inclusion12 decks35 decks
10%synergy
Urban Evolution
34%inclusion12 decks35 decks
25%synergy
Nature's Lore
26%inclusion9 decks35 decks
-5%synergy
Harmonize
20%inclusion7 decks35 decks
14%synergy
Overwhelming Stampede
20%inclusion7 decks35 decks
8%synergy
Curse of the Swine
17%inclusion6 decks35 decks
6%synergy
Grow from the Ashes
17%inclusion6 decks35 decks
15%synergy
Skyshroud Claim
17%inclusion6 decks35 decks
8%synergy
Migration Path
14%inclusion5 decks35 decks
11%synergy
Search for Tomorrow
14%inclusion5 decks35 decks
10%synergy
Spitting Image
14%inclusion5 decks35 decks
12%synergy
Irenicus's Vile Duplication
11%inclusion4 decks35 decks
5%synergy
River's Rebuke
11%inclusion4 decks35 decks
9%synergy
Shamanic Revelation
11%inclusion4 decks35 decks
6%synergy
Oversimplify
11%inclusion4 decks35 decks
7%synergy
Circuitous Route
11%inclusion4 decks35 decks
9%synergy
Explosive Vegetation
11%inclusion4 decks35 decks
6%synergy
Ezuri's Predation
11%inclusion4 decks35 decks
4%synergy
Rite of Replication
11%inclusion4 decks35 decks
4%synergy
Rishkar's Expertise
8.6%inclusion3 decks35 decks
0%synergy
Preordain
8.6%inclusion3 decks35 decks
0%synergy
Bushwhack
8.6%inclusion3 decks35 decks
7%synergy
Ponder
8.6%inclusion3 decks35 decks
1%synergy
Flood of Tears
8.6%inclusion3 decks35 decks
6%synergy
Regrowth
8.6%inclusion3 decks35 decks
5%synergy
Relm's Sketching
8.0%inclusion2 decks25 decks
7%synergy
Waterbending Lesson
7.7%inclusion1 decks13 decks
8%synergy
Nature's Rhythm
6.9%inclusion2 decks29 decks
1%synergy
Preposterous Proportions
5.9%inclusion2 decks34 decks
5%synergy
Pull Through the Weft
5.9%inclusion1 decks17 decks
5%synergy
Three Visits
5.7%inclusion2 decks35 decks
-17%synergy
Wear Down
5.7%inclusion2 decks35 decks
4%synergy
Peregrination
5.7%inclusion2 decks35 decks
6%synergy
Hour of Promise
5.7%inclusion2 decks35 decks
2%synergy
Deep Analysis
5.7%inclusion2 decks35 decks
5%synergy
Untamed Wilds
5.7%inclusion2 decks35 decks
6%synergy
Flare of Cultivation
5.7%inclusion2 decks35 decks
4%synergy
Overrun
5.7%inclusion2 decks35 decks
4%synergy
Consuming Tide
5.7%inclusion2 decks35 decks
4%synergy
Tooth and Nail
5.7%inclusion2 decks35 decks
4%synergy
Wash Out
5.7%inclusion2 decks35 decks
5%synergy
Treasure Cruise
5.7%inclusion2 decks35 decks
2%synergy
Broken Bond
5.7%inclusion2 decks35 decks
1%synergy
Bridgeworks Battle
5.7%inclusion2 decks35 decks
1%synergy
Ranger's Path
5.7%inclusion2 decks35 decks
5%synergy
Divination
5.7%inclusion2 decks35 decks
5%synergy
Triumph of the Hordes
5.7%inclusion2 decks35 decks
3%synergy
Aether Gale
5.7%inclusion2 decks35 decks
4%synergy
Utility Artifacts
Combine Chrysalis
26%inclusion9 decks35 decks
21%synergy
Swiftfoot Boots
26%inclusion9 decks35 decks
0%synergy
Lightning Greaves
14%inclusion5 decks35 decks
-8%synergy
Idol of Oblivion
11%inclusion4 decks35 decks
8%synergy
Bident of Thassa
8.6%inclusion3 decks35 decks
1%synergy
Expedition Map
5.7%inclusion2 decks35 decks
1%synergy
Emerald Medallion
5.7%inclusion2 decks35 decks
3%synergy
Quicksilver Amulet
5.7%inclusion2 decks35 decks
5%synergy
Mirror Box
5.7%inclusion2 decks35 decks
2%synergy
Enchantments
Wilderness Reclamation
26%inclusion9 decks35 decks
17%synergy
Garruk's Uprising
26%inclusion9 decks35 decks
9%synergy
Imprisoned in the Moon
17%inclusion6 decks35 decks
13%synergy
Primal Vigor
17%inclusion6 decks35 decks
14%synergy
Kindred Discovery
17%inclusion6 decks35 decks
7%synergy
Wild Growth
17%inclusion6 decks35 decks
8%synergy
Propaganda
17%inclusion6 decks35 decks
10%synergy
Growing Rites of Itlimoc
14%inclusion5 decks35 decks
8%synergy
Verity Circle
14%inclusion5 decks35 decks
14%synergy
Eusocial Engineering
12%inclusion2 decks17 decks
11%synergy
Simic Ascendancy
8.6%inclusion3 decks35 decks
-5%synergy
Utopia Sprawl
8.6%inclusion3 decks35 decks
2%synergy
Beastmaster Ascension
8.6%inclusion3 decks35 decks
5%synergy
Mystic Remora
8.6%inclusion3 decks35 decks
-7%synergy
Kenrith's Transformation
8.6%inclusion3 decks35 decks
4%synergy
Overgrowth
8.6%inclusion3 decks35 decks
8%synergy
Extravagant Replication
8.6%inclusion3 decks35 decks
6%synergy
Mana Reflection
8.6%inclusion3 decks35 decks
4%synergy
Khalni Heart Expedition
8.6%inclusion3 decks35 decks
5%synergy
Primeval Bounty
8.6%inclusion3 decks35 decks
7%synergy
March of the World Ooze
6.1%inclusion2 decks33 decks
5%synergy
Cryoshatter
5.9%inclusion1 decks17 decks
6%synergy
Moonlit Meditation
5.9%inclusion1 decks17 decks
4%synergy
Tribute to the World Tree
5.7%inclusion2 decks35 decks
-1%synergy
Opposition
5.7%inclusion2 decks35 decks
5%synergy
Fertile Ground
5.7%inclusion2 decks35 decks
4%synergy
Primal Rage
5.7%inclusion2 decks35 decks
5%synergy
Doubling Season
5.7%inclusion2 decks35 decks
-4%synergy
Cryptolith Rite
5.7%inclusion2 decks35 decks
3%synergy
Sandwurm Convergence
5.7%inclusion2 decks35 decks
3%synergy
Lignify
5.7%inclusion2 decks35 decks
4%synergy
Kiora Bests the Sea God
5.7%inclusion2 decks35 decks
4%synergy
New Horizons
5.7%inclusion2 decks35 decks
5%synergy
Witness Protection
5.7%inclusion2 decks35 decks
3%synergy
Dismiss into Dream
5.7%inclusion2 decks35 decks
5%synergy
Carpet of Flowers
5.7%inclusion2 decks35 decks
3%synergy
Retreat to Kazandu
5.7%inclusion2 decks35 decks
1%synergy
Unnatural Growth
5.7%inclusion2 decks35 decks
2%synergy
Mirrormade
5.7%inclusion2 decks35 decks
4%synergy
Zendikar's Roil
5.7%inclusion2 decks35 decks
1%synergy
Battles
Invasion of Zendikar
5.7%inclusion2 decks35 decks
4%synergy
Planeswalkers
Kiora, Master of the Depths
11%inclusion4 decks35 decks
9%synergy
Kiora, Behemoth Beckoner
8.6%inclusion3 decks35 decks
2%synergy
Oko, Thief of Crowns
8.6%inclusion3 decks35 decks
1%synergy
Nissa, Steward of Elements
8.6%inclusion3 decks35 decks
4%synergy
Kiora, the Crashing Wave
5.7%inclusion2 decks35 decks
3%synergy
Wrenn and Seven
5.7%inclusion2 decks35 decks
4%synergy
Utility Lands
Reliquary Tower
43%inclusion15 decks35 decks
-7%synergy
Temple of the False God
20%inclusion7 decks35 decks
4%synergy
Alchemist's Refuge
17%inclusion6 decks35 decks
0%synergy
Mosswort Bridge
17%inclusion6 decks35 decks
0%synergy
Rogue's Passage
17%inclusion6 decks35 decks
-5%synergy
Lumbering Falls
14%inclusion5 decks35 decks
7%synergy
Bonders' Enclave
8.6%inclusion3 decks35 decks
7%synergy
Restless Vinestalk
8.6%inclusion3 decks35 decks
3%synergy
Castle Vantress
8.6%inclusion3 decks35 decks
2%synergy
Coral Atoll
5.7%inclusion2 decks35 decks
3%synergy
Scavenger Grounds
5.7%inclusion2 decks35 decks
1%synergy
Mystic Sanctuary
5.7%inclusion2 decks35 decks
-7%synergy
Command Beacon
5.7%inclusion2 decks35 decks
2%synergy
Memorial to Genius
5.7%inclusion2 decks35 decks
5%synergy
Jungle Basin
5.7%inclusion2 decks35 decks
3%synergy
Mana Artifacts
Sol Ring
80%inclusion28 decks35 decks
-1%synergy
Arcane Signet
57%inclusion20 decks35 decks
-6%synergy
Simic Signet
26%inclusion9 decks35 decks
-6%synergy
Commander's Sphere
20%inclusion7 decks35 decks
12%synergy
Thought Vessel
17%inclusion6 decks35 decks
-3%synergy
Talisman of Curiosity
14%inclusion5 decks35 decks
-7%synergy
Herd Heirloom
6.9%inclusion2 decks29 decks
4%synergy
Mind Stone
5.7%inclusion2 decks35 decks
1%synergy
Lands
Forest
100%inclusion35 decks35 decks
5%synergy
Island
100%inclusion35 decks35 decks
5%synergy
Command Tower
71%inclusion25 decks35 decks
-14%synergy
Simic Growth Chamber
60%inclusion21 decks35 decks
11%synergy
Temple of Mystery
51%inclusion18 decks35 decks
13%synergy
Evolving Wilds
51%inclusion18 decks35 decks
26%synergy
Vineglimmer Snarl
43%inclusion15 decks35 decks
4%synergy
Thornwood Falls
43%inclusion15 decks35 decks
25%synergy
Flooded Grove
40%inclusion14 decks35 decks
-1%synergy
Hinterland Harbor
40%inclusion14 decks35 decks
-19%synergy
Yavimaya Coast
37%inclusion13 decks35 decks
-15%synergy
Simic Guildgate
31%inclusion11 decks35 decks
21%synergy
Terramorphic Expanse
31%inclusion11 decks35 decks
12%synergy
Tangled Islet
31%inclusion11 decks35 decks
15%synergy
Myriad Landscape
23%inclusion8 decks35 decks
1%synergy
Woodland Stream
20%inclusion7 decks35 decks
15%synergy
Dreamroot Cascade
20%inclusion7 decks35 decks
-22%synergy
Exotic Orchard
17%inclusion6 decks35 decks
-7%synergy
Path of Ancestry
17%inclusion6 decks35 decks
0%synergy
Littjara Mirrorlake
17%inclusion6 decks35 decks
13%synergy
Blighted Woodland
17%inclusion6 decks35 decks
10%synergy
Overflowing Basin
14%inclusion5 decks35 decks
-5%synergy
Rimewood Falls
14%inclusion5 decks35 decks
5%synergy
Rejuvenating Springs
11%inclusion4 decks35 decks
-32%synergy
Brokers Hideout
11%inclusion4 decks35 decks
6%synergy
Quandrix Campus
11%inclusion4 decks35 decks
5%synergy
Barkchannel Pathway
11%inclusion4 decks35 decks
-9%synergy
Vibrant Cityscape
7.7%inclusion1 decks13 decks
6%synergy
Snow-Covered Island
5.7%inclusion2 decks35 decks
-1%synergy
Waterlogged Grove
5.7%inclusion2 decks35 decks
-15%synergy
Drowner of Truth
5.7%inclusion2 decks35 decks
4%synergy
Breeding Pool
5.7%inclusion2 decks35 decks
-40%synergy
Disciple of Freyalise
5.7%inclusion2 decks35 decks
1%synergy
Vivid Creek
5.7%inclusion2 decks35 decks
4%synergy
Bridgeworks Battle
5.7%inclusion2 decks35 decks
1%synergy
Lush Oasis
5.7%inclusion2 decks35 decks
0%synergy
Tanglepool Bridge
5.7%inclusion2 decks35 decks
1%synergy
Ash Barrens
5.7%inclusion2 decks35 decks
2%synergy
Botanical Sanctum
5.7%inclusion2 decks35 decks
-7%synergy
Sink into Stupor
5.7%inclusion2 decks35 decks
-6%synergy
Command Bridge
5.6%inclusion1 decks18 decks
5%synergy
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