Koma, Cosmos Serpent (Commander) - Expensive 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
Badgermole Cub
25%inclusion1 decks4 decks
20%synergy
High Synergy Cards
Sakashima of a Thousand Faces
88%inclusion14 decks16 decks
82%synergy
Parallel Lives
81%inclusion13 decks16 decks
75%synergy
Adrix and Nev, Twincasters
75%inclusion12 decks16 decks
67%synergy
Mystic Remora
81%inclusion13 decks16 decks
66%synergy
Mana Drain
81%inclusion13 decks16 decks
66%synergy
Doubling Season
75%inclusion12 decks16 decks
65%synergy
Boseiju, Who Endures
88%inclusion14 decks16 decks
65%synergy
Otawara, Soaring City
81%inclusion13 decks16 decks
62%synergy
Spark Double
69%inclusion11 decks16 decks
59%synergy
Elemental Bond
63%inclusion10 decks16 decks
57%synergy
Top Cards
Birds of Paradise
81%inclusion13 decks16 decks
53%synergy
Beast Within
75%inclusion12 decks16 decks
25%synergy
An Offer You Can't Refuse
69%inclusion11 decks16 decks
45%synergy
Swan Song
69%inclusion11 decks16 decks
50%synergy
Three Visits
63%inclusion10 decks16 decks
39%synergy
Roaming Throne
63%inclusion10 decks16 decks
55%synergy
Junk Winder
63%inclusion10 decks16 decks
56%synergy
Finale of Devastation
63%inclusion10 decks16 decks
51%synergy
Nature's Lore
63%inclusion10 decks16 decks
32%synergy
Counterspell
63%inclusion10 decks16 decks
12%synergy
Game Changers
Gaea's Cradle
94%inclusion15 decks16 decks
86%synergy
Cyclonic Rift
94%inclusion15 decks16 decks
68%synergy
Rhystic Study
88%inclusion14 decks16 decks
66%synergy
Fierce Guardianship
88%inclusion14 decks16 decks
70%synergy
Ancient Tomb
81%inclusion13 decks16 decks
72%synergy
Force of Will
75%inclusion12 decks16 decks
65%synergy
Consecrated Sphinx
63%inclusion10 decks16 decks
54%synergy
The One Ring
56%inclusion9 decks16 decks
49%synergy
Crop Rotation
50%inclusion8 decks16 decks
37%synergy
Seedborn Muse
50%inclusion8 decks16 decks
34%synergy
Creatures
Craterhoof Behemoth
56%inclusion9 decks16 decks
47%synergy
Sakashima the Impostor
56%inclusion9 decks16 decks
54%synergy
Hullbreaker Horror
56%inclusion9 decks16 decks
38%synergy
Fyndhorn Elves
56%inclusion9 decks16 decks
41%synergy
Koma, World-Eater
54%inclusion7 decks13 decks
41%synergy
Enduring Vitality
53%inclusion8 decks15 decks
46%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion8 decks16 decks
33%synergy
Serpent of Yawning Depths
50%inclusion8 decks16 decks
44%synergy
Elvish Mystic
44%inclusion7 decks16 decks
20%synergy
Spawning Kraken
44%inclusion7 decks16 decks
36%synergy
Garruk's Packleader
38%inclusion6 decks16 decks
35%synergy
Llanowar Elves
38%inclusion6 decks16 decks
9%synergy
Delighted Halfling
38%inclusion6 decks16 decks
26%synergy
Eternal Witness
31%inclusion5 decks16 decks
10%synergy
Sakura-Tribe Elder
31%inclusion5 decks16 decks
12%synergy
Pollywog Prodigy
27%inclusion4 decks15 decks
20%synergy
Phyrexian Metamorph
25%inclusion4 decks16 decks
16%synergy
Kinnan, Bonder Prodigy
25%inclusion4 decks16 decks
22%synergy
Ohran Frostfang
25%inclusion4 decks16 decks
21%synergy
Arixmethes, Slumbering Isle
25%inclusion4 decks16 decks
12%synergy
Somberwald Sage
25%inclusion4 decks16 decks
24%synergy
Fanatic of Rhonas
20%inclusion3 decks15 decks
14%synergy
The Cabbage Merchant
20%inclusion1 decks5 decks
18%synergy
Tatyova, Benthic Druid
19%inclusion3 decks16 decks
-12%synergy
Collector Ouphe
19%inclusion3 decks16 decks
18%synergy
Saryth, the Viper's Fang
19%inclusion3 decks16 decks
17%synergy
Esix, Fractal Bloom
19%inclusion3 decks16 decks
15%synergy
Sylvan Safekeeper
19%inclusion3 decks16 decks
15%synergy
Spellskite
19%inclusion3 decks16 decks
13%synergy
Gene Pollinator
17%inclusion1 decks6 decks
16%synergy
Octomancer
13%inclusion2 decks15 decks
9%synergy
Disciple of Freyalise
13%inclusion2 decks15 decks
9%synergy
Hydroelectric Specimen
13%inclusion2 decks15 decks
7%synergy
Sowing Mycospawn
13%inclusion2 decks15 decks
12%synergy
Displacer Kitten
13%inclusion2 decks16 decks
8%synergy
Jaheira, Friend of the Forest
13%inclusion2 decks16 decks
9%synergy
Curiosity Crafter
13%inclusion2 decks16 decks
9%synergy
Bloom Tender
13%inclusion2 decks16 decks
8%synergy
Circle of Dreams Druid
13%inclusion2 decks16 decks
10%synergy
Arbor Elf
13%inclusion2 decks16 decks
6%synergy
Druid of Purification
13%inclusion2 decks16 decks
11%synergy
Murkfiend Liege
13%inclusion2 decks16 decks
-2%synergy
Wandering Archaic
13%inclusion2 decks16 decks
8%synergy
Elvish Spirit Guide
13%inclusion2 decks16 decks
8%synergy
Gilded Drake
13%inclusion2 decks16 decks
10%synergy
Archetype of Imagination
13%inclusion2 decks16 decks
8%synergy
Toski, Bearer of Secrets
13%inclusion2 decks16 decks
9%synergy
Glasspool Mimic
13%inclusion2 decks16 decks
8%synergy
Uro, Titan of Nature's Wrath
13%inclusion2 decks16 decks
3%synergy
Oviya, Automech Artisan
8.3%inclusion1 decks12 decks
6%synergy
Instants
Heroic Intervention
56%inclusion9 decks16 decks
26%synergy
Force of Negation
56%inclusion9 decks16 decks
48%synergy
Force of Vigor
50%inclusion8 decks16 decks
45%synergy
Worldly Tutor
50%inclusion8 decks16 decks
35%synergy
Double Major
50%inclusion8 decks16 decks
42%synergy
Mystical Tutor
50%inclusion8 decks16 decks
41%synergy
Archdruid's Charm
44%inclusion7 decks16 decks
38%synergy
Second Harvest
44%inclusion7 decks16 decks
37%synergy
Chord of Calling
44%inclusion7 decks16 decks
36%synergy
Arcane Denial
44%inclusion7 decks16 decks
21%synergy
Pongify
38%inclusion6 decks16 decks
13%synergy
Rapid Hybridization
38%inclusion6 decks16 decks
11%synergy
Return of the Wildspeaker
38%inclusion6 decks16 decks
27%synergy
Negate
38%inclusion6 decks16 decks
12%synergy
Krosan Grip
38%inclusion6 decks16 decks
30%synergy
Pact of Negation
38%inclusion6 decks16 decks
30%synergy
Mindbreak Trap
31%inclusion5 decks16 decks
26%synergy
Flusterstorm
31%inclusion5 decks16 decks
24%synergy
Sink into Stupor
27%inclusion4 decks15 decks
15%synergy
Legolas's Quick Reflexes
25%inclusion4 decks16 decks
22%synergy
Nature's Claim
25%inclusion4 decks16 decks
15%synergy
Mental Misstep
19%inclusion3 decks16 decks
13%synergy
Growth Spiral
19%inclusion3 decks16 decks
-26%synergy
Dispel
19%inclusion3 decks16 decks
14%synergy
Reality Shift
19%inclusion3 decks16 decks
4%synergy
Noxious Revival
19%inclusion3 decks16 decks
13%synergy
Delay
19%inclusion3 decks16 decks
16%synergy
Stifle
19%inclusion3 decks16 decks
18%synergy
Consult the Star Charts
17%inclusion1 decks6 decks
15%synergy
Divert Disaster
17%inclusion1 decks6 decks
16%synergy
Plasm Capture
13%inclusion2 decks16 decks
9%synergy
Stubborn Denial
13%inclusion2 decks16 decks
10%synergy
Sublime Epiphany
13%inclusion2 decks16 decks
10%synergy
Harrow
13%inclusion2 decks16 decks
1%synergy
Disallow
13%inclusion2 decks16 decks
11%synergy
Cryptic Command
13%inclusion2 decks16 decks
11%synergy
Tamiyo's Safekeeping
13%inclusion2 decks16 decks
7%synergy
Simic Charm
13%inclusion2 decks16 decks
5%synergy
Miscast
13%inclusion2 decks16 decks
11%synergy
Three Steps Ahead
6.7%inclusion1 decks15 decks
4%synergy
Smuggler's Surprise
6.7%inclusion1 decks15 decks
5%synergy
Strix Serenade
6.7%inclusion1 decks15 decks
3%synergy
Into the Flood Maw
6.7%inclusion1 decks15 decks
2%synergy
Veil of Summer
6.3%inclusion1 decks16 decks
0%synergy
Muddle the Mixture
6.3%inclusion1 decks16 decks
2%synergy
Trickbind
6.3%inclusion1 decks16 decks
6%synergy
Eureka Moment
6.3%inclusion1 decks16 decks
-5%synergy
Diviner's Portent
6.3%inclusion1 decks16 decks
6%synergy
Retraction Helix
6.3%inclusion1 decks16 decks
6%synergy
Brainstorm
6.3%inclusion1 decks16 decks
-8%synergy
Sorceries
Whelming Wave
63%inclusion10 decks16 decks
51%synergy
Rampant Growth
56%inclusion9 decks16 decks
16%synergy
Irenicus's Vile Duplication
56%inclusion9 decks16 decks
50%synergy
Kodama's Reach
50%inclusion8 decks16 decks
14%synergy
Farseek
50%inclusion8 decks16 decks
25%synergy
Cultivate
50%inclusion8 decks16 decks
3%synergy
Skyshroud Claim
44%inclusion7 decks16 decks
35%synergy
Overwhelming Stampede
31%inclusion5 decks16 decks
19%synergy
Green Sun's Zenith
25%inclusion4 decks16 decks
16%synergy
Quantum Misalignment
25%inclusion4 decks16 decks
22%synergy
Triumph of the Hordes
25%inclusion4 decks16 decks
22%synergy
Sea Gate Restoration
25%inclusion4 decks16 decks
20%synergy
Explore
19%inclusion3 decks16 decks
-2%synergy
Rite of Replication
19%inclusion3 decks16 decks
12%synergy
Eldritch Evolution
13%inclusion2 decks16 decks
9%synergy
Neoform
13%inclusion2 decks16 decks
9%synergy
Fabricate
13%inclusion2 decks16 decks
6%synergy
Temporal Manipulation
13%inclusion2 decks16 decks
11%synergy
Rishkar's Expertise
13%inclusion2 decks16 decks
4%synergy
Explosive Vegetation
13%inclusion2 decks16 decks
7%synergy
Bala Ged Recovery
13%inclusion2 decks16 decks
3%synergy
Migration Path
13%inclusion2 decks16 decks
9%synergy
Flare of Cultivation
6.7%inclusion1 decks15 decks
5%synergy
Bridgeworks Battle
6.7%inclusion1 decks15 decks
2%synergy
Inundate
6.3%inclusion1 decks16 decks
6%synergy
Polymorph
6.3%inclusion1 decks16 decks
6%synergy
Relearn
6.3%inclusion1 decks16 decks
6%synergy
Ranger's Path
6.3%inclusion1 decks16 decks
6%synergy
Last March of the Ents
6.3%inclusion1 decks16 decks
3%synergy
Turntimber Symbiosis
6.3%inclusion1 decks16 decks
4%synergy
Tempt with Discovery
6.3%inclusion1 decks16 decks
2%synergy
Curse of the Swine
6.3%inclusion1 decks16 decks
-5%synergy
Bribery
6.3%inclusion1 decks16 decks
6%synergy
Broken Bond
6.3%inclusion1 decks16 decks
1%synergy
Personal Tutor
6.3%inclusion1 decks16 decks
5%synergy
Expropriate
6.3%inclusion1 decks16 decks
5%synergy
Nylea's Intervention
6.3%inclusion1 decks16 decks
5%synergy
Doppelgang
6.3%inclusion1 decks16 decks
0%synergy
Shamanic Revelation
6.3%inclusion1 decks16 decks
1%synergy
Time Warp
6.3%inclusion1 decks16 decks
4%synergy
Regrowth
6.3%inclusion1 decks16 decks
3%synergy
Sylvan Scrying
6.3%inclusion1 decks16 decks
1%synergy
Raise the Palisade
6.3%inclusion1 decks16 decks
0%synergy
Utility Artifacts
Lightning Greaves
38%inclusion6 decks16 decks
16%synergy
Winter Orb
31%inclusion5 decks16 decks
31%synergy
Helm of the Host
31%inclusion5 decks16 decks
26%synergy
Swiftfoot Boots
31%inclusion5 decks16 decks
6%synergy
Static Orb
25%inclusion4 decks16 decks
25%synergy
Coat of Arms
25%inclusion4 decks16 decks
24%synergy
The Great Henge
25%inclusion4 decks16 decks
16%synergy
Null Rod
13%inclusion2 decks16 decks
12%synergy
Mirror Box
13%inclusion2 decks16 decks
9%synergy
Skullclamp
13%inclusion2 decks16 decks
11%synergy
Eldrazi Monument
13%inclusion2 decks16 decks
12%synergy
Banner of Kinship
7.7%inclusion1 decks13 decks
6%synergy
Winter Moon
6.7%inclusion1 decks15 decks
6%synergy
Sensei's Divining Top
6.3%inclusion1 decks16 decks
3%synergy
God-Pharaoh's Statue
6.3%inclusion1 decks16 decks
6%synergy
Manifold Key
6.3%inclusion1 decks16 decks
6%synergy
Phyrexian Altar
6.3%inclusion1 decks16 decks
6%synergy
Akroma's Memorial
6.3%inclusion1 decks16 decks
5%synergy
Proteus Staff
6.3%inclusion1 decks16 decks
6%synergy
Whispersilk Cloak
6.3%inclusion1 decks16 decks
4%synergy
Combine Chrysalis
6.3%inclusion1 decks16 decks
2%synergy
Emerald Medallion
6.3%inclusion1 decks16 decks
3%synergy
Sapphire Medallion
6.3%inclusion1 decks16 decks
3%synergy
Smokestack
6.3%inclusion1 decks16 decks
6%synergy
Enchantments
Tribute to the World Tree
56%inclusion9 decks16 decks
50%synergy
Kindred Discovery
31%inclusion5 decks16 decks
22%synergy
Sylvan Library
31%inclusion5 decks16 decks
22%synergy
Wild Growth
25%inclusion4 decks16 decks
16%synergy
Beastmaster Ascension
19%inclusion3 decks16 decks
16%synergy
Defense of the Heart
19%inclusion3 decks16 decks
16%synergy
Growing Rites of Itlimoc
19%inclusion3 decks16 decks
13%synergy
Moonlit Meditation
17%inclusion1 decks6 decks
15%synergy
Utopia Sprawl
13%inclusion2 decks16 decks
6%synergy
Carpet of Flowers
13%inclusion2 decks16 decks
10%synergy
Asceticism
13%inclusion2 decks16 decks
9%synergy
Cryptolith Rite
6.3%inclusion1 decks16 decks
3%synergy
Exploration
6.3%inclusion1 decks16 decks
-7%synergy
Verity Circle
6.3%inclusion1 decks16 decks
6%synergy
Frozen Aether
6.3%inclusion1 decks16 decks
6%synergy
Extravagant Replication
6.3%inclusion1 decks16 decks
4%synergy
Wilderness Reclamation
6.3%inclusion1 decks16 decks
-3%synergy
Unnatural Growth
6.3%inclusion1 decks16 decks
3%synergy
Burgeoning
6.3%inclusion1 decks16 decks
-1%synergy
Kenrith's Transformation
6.3%inclusion1 decks16 decks
2%synergy
Stasis
6.3%inclusion1 decks16 decks
6%synergy
Dismiss into Dream
6.3%inclusion1 decks16 decks
6%synergy
Opposition
6.3%inclusion1 decks16 decks
6%synergy
Primal Vigor
6.3%inclusion1 decks16 decks
3%synergy
Quest for Renewal
6.3%inclusion1 decks16 decks
5%synergy
Paradox Haze
6.3%inclusion1 decks16 decks
6%synergy
Propaganda
6.3%inclusion1 decks16 decks
-1%synergy
Diplomatic Immunity
6.3%inclusion1 decks16 decks
6%synergy
Battles
Invasion of Ikoria
13%inclusion2 decks16 decks
8%synergy
Invasion of Segovia
6.3%inclusion1 decks16 decks
6%synergy
Planeswalkers
Oko, Thief of Crowns
50%inclusion8 decks16 decks
43%synergy
Narset, Parter of Veils
6.3%inclusion1 decks16 decks
5%synergy
Tamiyo, the Moon Sage
6.3%inclusion1 decks16 decks
6%synergy
Utility Lands
Yavimaya, Cradle of Growth
56%inclusion9 decks16 decks
34%synergy
Reliquary Tower
56%inclusion9 decks16 decks
7%synergy
Three Tree City
53%inclusion8 decks15 decks
48%synergy
Evendo, Waking Haven
50%inclusion3 decks6 decks
45%synergy
Mistrise Village
45%inclusion5 decks11 decks
35%synergy
Command Beacon
44%inclusion7 decks16 decks
40%synergy
Minamo, School at Water's Edge
25%inclusion4 decks16 decks
19%synergy
Urza's Saga
25%inclusion4 decks16 decks
19%synergy
Emergence Zone
25%inclusion4 decks16 decks
21%synergy
Mystic Sanctuary
19%inclusion3 decks16 decks
6%synergy
Alchemist's Refuge
19%inclusion3 decks16 decks
2%synergy
Mosswort Bridge
19%inclusion3 decks16 decks
1%synergy
Castle Garenbrig
19%inclusion3 decks16 decks
14%synergy
Nykthos, Shrine to Nyx
13%inclusion2 decks16 decks
10%synergy
Rogue's Passage
13%inclusion2 decks16 decks
-9%synergy
Shifting Woodland
6.7%inclusion1 decks15 decks
0%synergy
Wasteland
6.3%inclusion1 decks16 decks
5%synergy
Rivendell
6.3%inclusion1 decks16 decks
1%synergy
Boseiju, Who Shelters All
6.3%inclusion1 decks16 decks
6%synergy
Maze of Ith
6.3%inclusion1 decks16 decks
3%synergy
Tolaria West
6.3%inclusion1 decks16 decks
5%synergy
Scavenger Grounds
6.3%inclusion1 decks16 decks
2%synergy
Dark Depths
6.3%inclusion1 decks16 decks
0%synergy
Oran-Rief, the Vastwood
6.3%inclusion1 decks16 decks
2%synergy
Dryad Arbor
6.3%inclusion1 decks16 decks
0%synergy
Mana Artifacts
Sol Ring
94%inclusion15 decks16 decks
13%synergy
Arcane Signet
81%inclusion13 decks16 decks
18%synergy
Talisman of Curiosity
63%inclusion10 decks16 decks
41%synergy
Mana Vault
44%inclusion7 decks16 decks
37%synergy
Lotus Petal
19%inclusion3 decks16 decks
12%synergy
Simic Signet
19%inclusion3 decks16 decks
-13%synergy
Fellwar Stone
19%inclusion3 decks16 decks
9%synergy
Chrome Mox
19%inclusion3 decks16 decks
12%synergy
Thought Vessel
13%inclusion2 decks16 decks
-8%synergy
Moss Diamond
6.3%inclusion1 decks16 decks
5%synergy
Grim Monolith
6.3%inclusion1 decks16 decks
3%synergy
Sky Diamond
6.3%inclusion1 decks16 decks
5%synergy
Jeweled Lotus
6.3%inclusion1 decks16 decks
4%synergy
Mana Crypt
6.3%inclusion1 decks16 decks
3%synergy
Mox Amber
6.3%inclusion1 decks16 decks
0%synergy
Coveted Jewel
6.3%inclusion1 decks16 decks
6%synergy
Gilded Lotus
6.3%inclusion1 decks16 decks
5%synergy
Thran Dynamo
6.3%inclusion1 decks16 decks
3%synergy
Mox Opal
6.3%inclusion1 decks16 decks
2%synergy
Lands
Command Tower
100%inclusion16 decks16 decks
15%synergy
Breeding Pool
94%inclusion15 decks16 decks
47%synergy
Rejuvenating Springs
94%inclusion15 decks16 decks
50%synergy
Misty Rainforest
88%inclusion14 decks16 decks
56%synergy
Tropical Island
88%inclusion14 decks16 decks
73%synergy
Island
81%inclusion13 decks16 decks
-14%synergy
Forest
81%inclusion13 decks16 decks
-14%synergy
Yavimaya Coast
75%inclusion12 decks16 decks
22%synergy
Barkchannel Pathway
63%inclusion10 decks16 decks
42%synergy
Waterlogged Grove
56%inclusion9 decks16 decks
36%synergy
Hinterland Harbor
50%inclusion8 decks16 decks
-10%synergy
Prismatic Vista
44%inclusion7 decks16 decks
36%synergy
Hedge Maze
44%inclusion7 decks16 decks
24%synergy
Flooded Grove
44%inclusion7 decks16 decks
3%synergy
Mana Confluence
38%inclusion6 decks16 decks
32%synergy
Dreamroot Cascade
38%inclusion6 decks16 decks
-5%synergy
Willowrush Verge
33%inclusion4 decks12 decks
17%synergy
Snow-Covered Island
31%inclusion5 decks16 decks
24%synergy
Snow-Covered Forest
31%inclusion5 decks16 decks
25%synergy
Verdant Catacombs
31%inclusion5 decks16 decks
22%synergy
Sink into Stupor
27%inclusion4 decks15 decks
15%synergy
Exotic Orchard
25%inclusion4 decks16 decks
1%synergy
Windswept Heath
25%inclusion4 decks16 decks
14%synergy
Sea Gate Restoration
25%inclusion4 decks16 decks
20%synergy
Wooded Foothills
25%inclusion4 decks16 decks
15%synergy
City of Brass
25%inclusion4 decks16 decks
19%synergy
Simic Growth Chamber
19%inclusion3 decks16 decks
-29%synergy
Vineglimmer Snarl
19%inclusion3 decks16 decks
-20%synergy
Scalding Tarn
19%inclusion3 decks16 decks
9%synergy
Polluted Delta
19%inclusion3 decks16 decks
8%synergy
Disciple of Freyalise
13%inclusion2 decks15 decks
9%synergy
Hydroelectric Specimen
13%inclusion2 decks15 decks
7%synergy
Fabled Passage
13%inclusion2 decks16 decks
-2%synergy
Gemstone Caverns
13%inclusion2 decks16 decks
6%synergy
Glasspool Mimic
13%inclusion2 decks16 decks
8%synergy
Bala Ged Recovery
13%inclusion2 decks16 decks
3%synergy
Flooded Strand
13%inclusion2 decks16 decks
1%synergy
Horizon of Progress
6.7%inclusion1 decks15 decks
2%synergy
Bridgeworks Battle
6.7%inclusion1 decks15 decks
2%synergy
Blighted Woodland
6.3%inclusion1 decks16 decks
-1%synergy
Myriad Landscape
6.3%inclusion1 decks16 decks
-15%synergy
Turntimber Symbiosis
6.3%inclusion1 decks16 decks
4%synergy
Tangled Islet
6.3%inclusion1 decks16 decks
-10%synergy
Temple of Mystery
6.3%inclusion1 decks16 decks
-32%synergy
Cavern of Souls
6.3%inclusion1 decks16 decks
0%synergy
Jwari Disruption
6.3%inclusion1 decks16 decks
5%synergy
Rimewood Falls
6.3%inclusion1 decks16 decks
-3%synergy
Plaza of Heroes
6.3%inclusion1 decks16 decks
5%synergy
Hall of Tagsin
6.3%inclusion1 decks16 decks
6%synergy