The Monstrous Serpent (Commander) - Core

Original Name:

Koma, Cosmos SerpentKoma, Cosmos Serpent

The Monstrous Serpent
Rank #301
591decks
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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 Unagi of Kyoshi Island
20%inclusion8 decks41 decks
14%synergy
Ember Island Production
5.6%inclusion2 decks36 decks
5%synergy
Shared Roots
5.3%inclusion2 decks38 decks
2%synergy
Agna Qel'a
3.0%inclusion1 decks33 decks
2%synergy
Waterbender Ascension
3.0%inclusion1 decks33 decks
3%synergy
High Synergy Cards
Whelming Wave
75%inclusion442 decks591 decks
63%synergy
Adrix and Nev, Twincasters
64%inclusion381 decks591 decks
56%synergy
Junk Winder
62%inclusion369 decks591 decks
56%synergy
Elemental Bond
55%inclusion328 decks591 decks
50%synergy
Koma, World-Eater
63%inclusion241 decks384 decks
49%synergy
Irenicus's Vile Duplication
48%inclusion285 decks591 decks
42%synergy
Serpent of Yawning Depths
44%inclusion259 decks591 decks
37%synergy
Garruk's Packleader
38%inclusion227 decks591 decks
36%synergy
Arixmethes, Slumbering Isle
49%inclusion291 decks591 decks
36%synergy
Kodama's Reach
72%inclusion425 decks591 decks
36%synergy
Top Cards
Cultivate
81%inclusion478 decks591 decks
34%synergy
Rampant Growth
72%inclusion425 decks591 decks
31%synergy
Counterspell
66%inclusion393 decks591 decks
17%synergy
Growth Spiral
66%inclusion392 decks591 decks
22%synergy
Beast Within
60%inclusion357 decks591 decks
10%synergy
Negate
55%inclusion324 decks591 decks
29%synergy
Aesi, Tyrant of Gyre Strait
48%inclusion285 decks591 decks
31%synergy
Tatyova, Benthic Druid
47%inclusion278 decks591 decks
16%synergy
Nature's Lore
45%inclusion267 decks591 decks
15%synergy
Farseek
45%inclusion266 decks591 decks
20%synergy
Game Changers
Seedborn Muse
10%inclusion61 decks591 decks
-5%synergy
Creatures
Spark Double
44%inclusion262 decks591 decks
35%synergy
Sakura-Tribe Elder
44%inclusion261 decks591 decks
25%synergy
Llanowar Elves
43%inclusion256 decks591 decks
16%synergy
Murkfiend Liege
43%inclusion255 decks591 decks
29%synergy
Spawning Kraken
42%inclusion247 decks591 decks
34%synergy
Slinn Voda, the Rising Deep
37%inclusion217 decks591 decks
30%synergy
Elvish Mystic
35%inclusion207 decks591 decks
11%synergy
Coiling Oracle
33%inclusion197 decks591 decks
20%synergy
Hullbreaker Horror
31%inclusion185 decks591 decks
14%synergy
Esix, Fractal Bloom
27%inclusion160 decks591 decks
23%synergy
Eternal Witness
26%inclusion156 decks591 decks
5%synergy
Octomancer
26%inclusion128 decks489 decks
21%synergy
Scourge of Fleets
26%inclusion152 decks591 decks
18%synergy
Archetype of Imagination
25%inclusion149 decks591 decks
21%synergy
Summon: Leviathan
25%inclusion39 decks156 decks
18%synergy
Fyndhorn Elves
25%inclusion147 decks591 decks
9%synergy
Sakashima the Impostor
24%inclusion141 decks591 decks
21%synergy
Nadir Kraken
23%inclusion138 decks591 decks
19%synergy
Sakashima of a Thousand Faces
23%inclusion135 decks591 decks
18%synergy
Ohran Frostfang
23%inclusion135 decks591 decks
19%synergy
Birds of Paradise
22%inclusion130 decks591 decks
-6%synergy
Reclamation Sage
21%inclusion126 decks591 decks
7%synergy
Xolatoyac, the Smiling Flood
20%inclusion116 decks591 decks
12%synergy
Enduring Vitality
18%inclusion84 decks456 decks
11%synergy
Rampaging Baloths
18%inclusion106 decks591 decks
1%synergy
Stormtide Leviathan
17%inclusion103 decks591 decks
12%synergy
Avenger of Zendikar
17%inclusion103 decks591 decks
0%synergy
Nezahal, Primal Tide
17%inclusion102 decks591 decks
6%synergy
Troyan, Gutsy Explorer
16%inclusion97 decks591 decks
13%synergy
Curiosity Crafter
16%inclusion96 decks591 decks
13%synergy
Scute Swarm
16%inclusion93 decks591 decks
-5%synergy
Inga and Esika
14%inclusion84 decks591 decks
11%synergy
Fanatic of Rhonas
14%inclusion71 decks517 decks
8%synergy
Kiora, Sovereign of the Deep
14%inclusion81 decks591 decks
12%synergy
Tromokratis
13%inclusion78 decks591 decks
8%synergy
Reef Worm
13%inclusion78 decks591 decks
9%synergy
Saryth, the Viper's Fang
12%inclusion69 decks591 decks
10%synergy
Starwinder
12%inclusion12 decks104 decks
5%synergy
Roaming Throne
11%inclusion67 decks591 decks
3%synergy
Toski, Bearer of Secrets
11%inclusion66 decks591 decks
8%synergy
Tireless Provisioner
11%inclusion65 decks591 decks
-4%synergy
Progenitor Mimic
10%inclusion62 decks591 decks
6%synergy
Lotus Cobra
10%inclusion61 decks591 decks
-3%synergy
Enduring Curiosity
10%inclusion46 decks461 decks
7%synergy
Jaheira, Friend of the Forest
9.3%inclusion55 decks591 decks
5%synergy
Craterhoof Behemoth
9.1%inclusion54 decks591 decks
0%synergy
Stormsurge Kraken
8.8%inclusion52 decks591 decks
4%synergy
Simic Sky Swallower
8.6%inclusion51 decks591 decks
4%synergy
Loot, Exuberant Explorer
8.5%inclusion32 decks378 decks
1%synergy
Uro, Titan of Nature's Wrath
8.3%inclusion49 decks591 decks
-2%synergy
Instants
Double Major
42%inclusion248 decks591 decks
33%synergy
Return of the Wildspeaker
36%inclusion214 decks591 decks
26%synergy
Second Harvest
35%inclusion205 decks591 decks
28%synergy
Arcane Denial
32%inclusion188 decks591 decks
9%synergy
Heroic Intervention
29%inclusion174 decks591 decks
-1%synergy
Pongify
29%inclusion172 decks591 decks
4%synergy
Simic Charm
29%inclusion169 decks591 decks
21%synergy
Rapid Hybridization
28%inclusion168 decks591 decks
2%synergy
An Offer You Can't Refuse
25%inclusion148 decks591 decks
2%synergy
Krosan Grip
25%inclusion146 decks591 decks
17%synergy
Reality Shift
23%inclusion138 decks591 decks
9%synergy
Planar Genesis
21%inclusion111 decks517 decks
11%synergy
Eureka Moment
20%inclusion118 decks591 decks
9%synergy
Snakeskin Veil
19%inclusion110 decks591 decks
13%synergy
Harrow
18%inclusion107 decks591 decks
6%synergy
Return to Nature
18%inclusion106 decks591 decks
12%synergy
Aetherize
17%inclusion99 decks591 decks
5%synergy
Brainstorm
16%inclusion96 decks591 decks
2%synergy
Nature's Claim
16%inclusion94 decks591 decks
6%synergy
Tamiyo's Safekeeping
14%inclusion84 decks591 decks
8%synergy
Voidslime
13%inclusion76 decks591 decks
8%synergy
Perplexing Test
12%inclusion70 decks591 decks
7%synergy
Entish Restoration
12%inclusion69 decks591 decks
2%synergy
Plasm Capture
12%inclusion68 decks591 decks
8%synergy
Decisive Denial
11%inclusion67 decks591 decks
6%synergy
Mystic Reflection
10%inclusion57 decks591 decks
7%synergy
Swan Song
8.6%inclusion51 decks591 decks
-10%synergy
Resculpt
8.3%inclusion49 decks591 decks
2%synergy
Saw It Coming
8.3%inclusion49 decks591 decks
7%synergy
Joint Exploration
8.0%inclusion47 decks591 decks
2%synergy
Stubborn Denial
7.8%inclusion46 decks591 decks
5%synergy
Collective Resistance
7.7%inclusion40 decks518 decks
4%synergy
Tyvar's Stand
7.3%inclusion43 decks591 decks
5%synergy
Disdainful Stroke
7.1%inclusion42 decks591 decks
5%synergy
Sublime Epiphany
6.4%inclusion38 decks591 decks
4%synergy
Sink into Stupor
6.4%inclusion33 decks518 decks
-5%synergy
Cancel
6.3%inclusion37 decks591 decks
4%synergy
Fact or Fiction
6.1%inclusion36 decks591 decks
3%synergy
Archdruid's Charm
6.0%inclusion35 decks582 decks
0%synergy
Opt
5.9%inclusion35 decks591 decks
-2%synergy
Mana Drain
5.9%inclusion35 decks591 decks
-10%synergy
Roiling Regrowth
5.6%inclusion33 decks591 decks
1%synergy
Dispel
5.4%inclusion32 decks591 decks
1%synergy
Rewind
5.2%inclusion31 decks591 decks
2%synergy
Sorceries
Explore
39%inclusion228 decks591 decks
18%synergy
Three Visits
32%inclusion188 decks591 decks
9%synergy
Skyshroud Claim
30%inclusion178 decks591 decks
21%synergy
Overwhelming Stampede
27%inclusion162 decks591 decks
15%synergy
Urban Evolution
26%inclusion156 decks591 decks
17%synergy
Shamanic Revelation
24%inclusion140 decks591 decks
18%synergy
Migration Path
21%inclusion126 decks591 decks
18%synergy
Quantum Misalignment
21%inclusion123 decks591 decks
18%synergy
Rite of Replication
17%inclusion100 decks591 decks
10%synergy
Harmonize
16%inclusion94 decks591 decks
10%synergy
Search for Tomorrow
16%inclusion94 decks591 decks
11%synergy
Explosive Vegetation
15%inclusion90 decks591 decks
10%synergy
Rishkar's Expertise
15%inclusion87 decks591 decks
6%synergy
Curse of the Swine
14%inclusion81 decks591 decks
3%synergy
Distant Melody
13%inclusion77 decks591 decks
10%synergy
Ravenform
10%inclusion61 decks591 decks
6%synergy
Ezuri's Predation
10%inclusion57 decks591 decks
2%synergy
Bala Ged Recovery
9.0%inclusion53 decks591 decks
-1%synergy
Broken Bond
8.3%inclusion49 decks591 decks
3%synergy
Doppelgang
8.1%inclusion47 decks582 decks
2%synergy
Preposterous Proportions
7.9%inclusion30 decks379 decks
7%synergy
Preordain
7.6%inclusion45 decks591 decks
-1%synergy
Ponder
7.3%inclusion43 decks591 decks
0%synergy
Spitting Image
6.9%inclusion41 decks591 decks
5%synergy
Overrun
6.8%inclusion40 decks591 decks
5%synergy
Triumph of the Hordes
6.3%inclusion37 decks591 decks
3%synergy
Regrowth
5.9%inclusion35 decks591 decks
2%synergy
Bridgeworks Battle
5.6%inclusion29 decks518 decks
1%synergy
Aggressive Biomancy
5.4%inclusion28 decks516 decks
0%synergy
Croaking Counterpart
5.4%inclusion32 decks591 decks
1%synergy
Circuitous Route
5.4%inclusion32 decks591 decks
3%synergy
Repudiate // Replicate
5.1%inclusion30 decks591 decks
3%synergy
Vastwood Surge
5.1%inclusion30 decks591 decks
4%synergy
Utility Artifacts
Swiftfoot Boots
44%inclusion262 decks591 decks
19%synergy
Helm of the Host
34%inclusion199 decks591 decks
28%synergy
Combine Chrysalis
33%inclusion195 decks591 decks
29%synergy
Lightning Greaves
28%inclusion163 decks591 decks
6%synergy
Idol of Oblivion
18%inclusion109 decks591 decks
15%synergy
Mirror Box
16%inclusion95 decks591 decks
13%synergy
Bident of Thassa
15%inclusion88 decks591 decks
8%synergy
Emerald Medallion
9.0%inclusion53 decks591 decks
6%synergy
Sapphire Medallion
8.0%inclusion47 decks591 decks
5%synergy
Eldrazi Monument
6.4%inclusion38 decks591 decks
6%synergy
Kefnet's Monument
5.1%inclusion30 decks591 decks
4%synergy
Enchantments
Parallel Lives
30%inclusion176 decks591 decks
24%synergy
Garruk's Uprising
28%inclusion165 decks591 decks
12%synergy
Tribute to the World Tree
27%inclusion159 decks591 decks
21%synergy
Doubling Season
26%inclusion156 decks591 decks
17%synergy
Kindred Discovery
21%inclusion123 decks591 decks
11%synergy
Wild Growth
17%inclusion99 decks591 decks
8%synergy
Beastmaster Ascension
17%inclusion98 decks591 decks
13%synergy
Primal Vigor
15%inclusion87 decks591 decks
12%synergy
Growing Rites of Itlimoc
14%inclusion80 decks591 decks
8%synergy
Utopia Sprawl
13%inclusion76 decks591 decks
6%synergy
Wilderness Reclamation
13%inclusion76 decks591 decks
4%synergy
Ominous Seas
12%inclusion68 decks591 decks
7%synergy
Unnatural Growth
11%inclusion67 decks591 decks
8%synergy
Propaganda
10%inclusion61 decks591 decks
4%synergy
Mystic Remora
10%inclusion59 decks591 decks
-5%synergy
Kenrith's Transformation
9.3%inclusion55 decks591 decks
5%synergy
Khalni Heart Expedition
9.1%inclusion54 decks591 decks
5%synergy
Extravagant Replication
9.1%inclusion54 decks591 decks
7%synergy
Imprisoned in the Moon
8.8%inclusion52 decks591 decks
5%synergy
Paradox Haze
8.5%inclusion50 decks591 decks
8%synergy
Exploration
8.1%inclusion48 decks591 decks
-5%synergy
Verity Circle
7.6%inclusion45 decks591 decks
7%synergy
Cryptolith Rite
6.6%inclusion39 decks591 decks
3%synergy
Quest for Ula's Temple
6.3%inclusion37 decks591 decks
4%synergy
Reconnaissance Mission
5.8%inclusion34 decks591 decks
4%synergy
Impostor Syndrome
5.3%inclusion4 decks75 decks
3%synergy
Asceticism
5.1%inclusion30 decks591 decks
2%synergy
Battles
Invasion of Segovia
7.1%inclusion42 decks591 decks
6%synergy
Invasion of Zendikar
6.1%inclusion36 decks591 decks
4%synergy
Planeswalkers
Oko, Thief of Crowns
12%inclusion69 decks591 decks
5%synergy
Kiora, the Crashing Wave
9.5%inclusion56 decks591 decks
7%synergy
Kiora, Behemoth Beckoner
9.3%inclusion55 decks591 decks
3%synergy
Kiora, Master of the Depths
5.2%inclusion31 decks591 decks
3%synergy
Utility Lands
Reliquary Tower
51%inclusion304 decks591 decks
2%synergy
Temple of the False God
23%inclusion136 decks591 decks
7%synergy
Rogue's Passage
20%inclusion117 decks591 decks
-2%synergy
Mosswort Bridge
19%inclusion113 decks591 decks
2%synergy
Mystic Sanctuary
12%inclusion71 decks591 decks
-1%synergy
Yavimaya, Cradle of Growth
9.0%inclusion53 decks591 decks
-13%synergy
Command Beacon
8.8%inclusion52 decks591 decks
5%synergy
Castle Garenbrig
8.8%inclusion52 decks591 decks
4%synergy
Alchemist's Refuge
8.5%inclusion50 decks591 decks
-9%synergy
Lumbering Falls
8.1%inclusion48 decks591 decks
1%synergy
Restless Vinestalk
7.8%inclusion46 decks591 decks
2%synergy
Three Tree City
7.7%inclusion38 decks494 decks
3%synergy
Castle Vantress
6.9%inclusion41 decks591 decks
0%synergy
Mistrise Village
6.5%inclusion13 decks201 decks
-4%synergy
Boseiju, Who Endures
6.4%inclusion38 decks591 decks
-16%synergy
Evendo, Waking Haven
5.6%inclusion6 decks108 decks
0%synergy
Otawara, Soaring City
5.2%inclusion31 decks591 decks
-14%synergy
Mana Artifacts
Sol Ring
86%inclusion510 decks591 decks
6%synergy
Arcane Signet
72%inclusion424 decks591 decks
9%synergy
Simic Signet
47%inclusion276 decks591 decks
15%synergy
Thought Vessel
34%inclusion200 decks591 decks
14%synergy
Talisman of Curiosity
28%inclusion168 decks591 decks
7%synergy
Commander's Sphere
19%inclusion111 decks591 decks
11%synergy
Fellwar Stone
12%inclusion68 decks591 decks
2%synergy
Decanter of Endless Water
8.5%inclusion50 decks591 decks
3%synergy
Mind Stone
8.3%inclusion49 decks591 decks
4%synergy
Thran Dynamo
7.6%inclusion45 decks591 decks
5%synergy
Lands
Island
96%inclusion567 decks591 decks
1%synergy
Forest
96%inclusion566 decks591 decks
0%synergy
Command Tower
84%inclusion498 decks591 decks
-1%synergy
Simic Growth Chamber
55%inclusion325 decks591 decks
7%synergy
Hinterland Harbor
55%inclusion323 decks591 decks
-5%synergy
Yavimaya Coast
50%inclusion295 decks591 decks
-2%synergy
Temple of Mystery
46%inclusion271 decks591 decks
8%synergy
Vineglimmer Snarl
42%inclusion250 decks591 decks
4%synergy
Dreamroot Cascade
39%inclusion229 decks591 decks
-3%synergy
Flooded Grove
38%inclusion224 decks591 decks
-3%synergy
Evolving Wilds
33%inclusion196 decks591 decks
8%synergy
Myriad Landscape
32%inclusion189 decks591 decks
10%synergy
Rejuvenating Springs
32%inclusion187 decks591 decks
-12%synergy
Thornwood Falls
30%inclusion177 decks591 decks
12%synergy
Exotic Orchard
27%inclusion159 decks591 decks
3%synergy
Tangled Islet
26%inclusion156 decks591 decks
10%synergy
Terramorphic Expanse
24%inclusion144 decks591 decks
5%synergy
Breeding Pool
23%inclusion134 decks591 decks
-23%synergy
Rimewood Falls
21%inclusion123 decks591 decks
12%synergy
Barkchannel Pathway
20%inclusion116 decks591 decks
-1%synergy
Simic Guildgate
18%inclusion109 decks591 decks
8%synergy
Overflowing Basin
17%inclusion96 decks563 decks
-2%synergy
Waterlogged Grove
15%inclusion87 decks591 decks
-6%synergy
Path of Ancestry
14%inclusion80 decks591 decks
-4%synergy
Blighted Woodland
13%inclusion74 decks591 decks
5%synergy
Willowrush Verge
11%inclusion29 decks272 decks
-6%synergy
Hedge Maze
10%inclusion60 decks583 decks
-9%synergy
Misty Rainforest
10%inclusion60 decks591 decks
-21%synergy
Fabled Passage
10%inclusion60 decks591 decks
-4%synergy
Littjara Mirrorlake
10%inclusion58 decks591 decks
6%synergy
Botanical Sanctum
9.3%inclusion55 decks591 decks
-3%synergy
Bala Ged Recovery
9.0%inclusion53 decks591 decks
-1%synergy
Woodland Stream
8.5%inclusion50 decks591 decks
3%synergy
Glasspool Mimic
7.6%inclusion45 decks591 decks
3%synergy
Quandrix Campus
7.6%inclusion45 decks591 decks
1%synergy
Snow-Covered Island
6.8%inclusion40 decks591 decks
0%synergy
Snow-Covered Forest
6.8%inclusion40 decks591 decks
0%synergy
Sink into Stupor
6.4%inclusion33 decks518 decks
-5%synergy
Lush Oasis
6.0%inclusion33 decks547 decks
0%synergy
Bridgeworks Battle
5.6%inclusion29 decks518 decks
1%synergy
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