Svyelun of Sea and Sky (Commander) - Expensive Upgraded

Svyelun of Sea and Sky
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Background image for 21 Best Merfolk Cards for Commander
Chris Guest
Jul 9, 2025
Chris Guest
21 Best Merfolk Cards for Commander
As one of Magic's oldest creature types, there are no shortage of excellent Merfolk to brew with. Chris breaks down the best of the best in this list.
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Namor the Sub-Mariner
100%inclusion1 decks1 decks
100%synergy
Attuma, Atlantean Warlord
100%inclusion1 decks1 decks
99%synergy
Agna Qel'a
50%inclusion1 decks2 decks
42%synergy
High Synergy Cards
Vodalian Hexcatcher
100%inclusion7 decks7 decks
98%synergy
Tide Shaper
86%inclusion6 decks7 decks
85%synergy
Emperor Mihail II
86%inclusion6 decks7 decks
85%synergy
Mist Dancer
86%inclusion6 decks7 decks
85%synergy
Seafloor Oracle
86%inclusion6 decks7 decks
84%synergy
Lord of Atlantis
86%inclusion6 decks7 decks
84%synergy
Kopala, Warden of Waves
86%inclusion6 decks7 decks
84%synergy
Merrow Reejerey
86%inclusion6 decks7 decks
84%synergy
Master of the Pearl Trident
86%inclusion6 decks7 decks
84%synergy
Raise the Palisade
86%inclusion6 decks7 decks
83%synergy
Top Cards
Mana Drain
100%inclusion7 decks7 decks
73%synergy
Pongify
86%inclusion6 decks7 decks
45%synergy
Stonybrook Banneret
86%inclusion6 decks7 decks
82%synergy
Sapphire Medallion
86%inclusion6 decks7 decks
28%synergy
Kindred Discovery
71%inclusion5 decks7 decks
65%synergy
Merrow Harbinger
71%inclusion5 decks7 decks
70%synergy
Master of Waves
71%inclusion5 decks7 decks
68%synergy
Deeproot Pilgrimage
71%inclusion5 decks7 decks
70%synergy
Merrow Commerce
71%inclusion5 decks7 decks
70%synergy
Thada Adel, Acquisitor
71%inclusion5 decks7 decks
70%synergy
Game Changers
Cyclonic Rift
86%inclusion6 decks7 decks
51%synergy
Rhystic Study
71%inclusion5 decks7 decks
38%synergy
Thassa's Oracle
43%inclusion3 decks7 decks
30%synergy
Force of Will
43%inclusion3 decks7 decks
25%synergy
The One Ring
29%inclusion2 decks7 decks
16%synergy
Fierce Guardianship
29%inclusion2 decks7 decks
5%synergy
Chrome Mox
29%inclusion2 decks7 decks
19%synergy
Mystical Tutor
29%inclusion2 decks7 decks
5%synergy
Ancient Tomb
14%inclusion1 decks7 decks
2%synergy
Creatures
Thieving Skydiver
71%inclusion5 decks7 decks
67%synergy
Merfolk Sovereign
57%inclusion4 decks7 decks
56%synergy
Mindspring Merfolk
57%inclusion4 decks7 decks
56%synergy
Deepchannel Mentor
57%inclusion4 decks7 decks
56%synergy
Lullmage Mentor
57%inclusion4 decks7 decks
56%synergy
Spark Double
57%inclusion4 decks7 decks
44%synergy
Seahunter
57%inclusion4 decks7 decks
57%synergy
Wanderwine Prophets
57%inclusion4 decks7 decks
57%synergy
Summon: Leviathan
50%inclusion3 decks6 decks
48%synergy
Tishana's Tidebinder
43%inclusion3 decks7 decks
38%synergy
Roaming Throne
43%inclusion3 decks7 decks
39%synergy
Sigil Tracer
43%inclusion3 decks7 decks
42%synergy
Phyrexian Metamorph
43%inclusion3 decks7 decks
24%synergy
Alandra, Sky Dreamer
43%inclusion3 decks7 decks
36%synergy
Kiora, the Rising Tide
43%inclusion3 decks7 decks
40%synergy
Empress Galina
43%inclusion3 decks7 decks
42%synergy
Merfolk Trickster
43%inclusion3 decks7 decks
41%synergy
Glasspool Mimic
43%inclusion3 decks7 decks
37%synergy
Silvergill Adept
43%inclusion3 decks7 decks
42%synergy
Coralhelm Commander
29%inclusion2 decks7 decks
28%synergy
Mist-Cloaked Herald
29%inclusion2 decks7 decks
26%synergy
Forensic Researcher
29%inclusion2 decks7 decks
27%synergy
Mistcaller
29%inclusion2 decks7 decks
28%synergy
Sakashima of a Thousand Faces
29%inclusion2 decks7 decks
22%synergy
Tidal Warrior
29%inclusion2 decks7 decks
28%synergy
Enduring Curiosity
29%inclusion2 decks7 decks
22%synergy
Defiler of Dreams
29%inclusion2 decks7 decks
20%synergy
Benthic Biomancer
29%inclusion2 decks7 decks
28%synergy
Floodpits Drowner
29%inclusion2 decks7 decks
27%synergy
Thassa, God of the Sea
29%inclusion2 decks7 decks
25%synergy
Sea Scryer
29%inclusion2 decks7 decks
28%synergy
Cursecatcher
29%inclusion2 decks7 decks
27%synergy
Eluge, the Shoreless Sea
14%inclusion1 decks7 decks
6%synergy
Pirated Copy
14%inclusion1 decks7 decks
14%synergy
Undercover Operative
14%inclusion1 decks7 decks
13%synergy
True-Name Nemesis
14%inclusion1 decks7 decks
13%synergy
Stormtide Leviathan
14%inclusion1 decks7 decks
7%synergy
Herald of Secret Streams
14%inclusion1 decks7 decks
13%synergy
Subtlety
14%inclusion1 decks7 decks
13%synergy
Synth Infiltrator
14%inclusion1 decks7 decks
13%synergy
Reef Shaman
14%inclusion1 decks7 decks
14%synergy
Mirrorhall Mimic
14%inclusion1 decks7 decks
12%synergy
Hydroelectric Specimen
14%inclusion1 decks7 decks
1%synergy
Harbinger of the Tides
14%inclusion1 decks7 decks
13%synergy
Vesuvan Doppelganger
14%inclusion1 decks7 decks
14%synergy
Tempest Caller
14%inclusion1 decks7 decks
13%synergy
Surgespanner
14%inclusion1 decks7 decks
14%synergy
Clone
14%inclusion1 decks7 decks
12%synergy
Vizier of Many Faces
14%inclusion1 decks7 decks
13%synergy
Clever Impersonator
14%inclusion1 decks7 decks
8%synergy
Instants
Counterspell
71%inclusion5 decks7 decks
5%synergy
Rapid Hybridization
57%inclusion4 decks7 decks
23%synergy
Sink into Stupor
57%inclusion4 decks7 decks
35%synergy
High Tide
57%inclusion4 decks7 decks
13%synergy
An Offer You Can't Refuse
43%inclusion3 decks7 decks
6%synergy
Strix Serenade
43%inclusion3 decks7 decks
33%synergy
Resculpt
43%inclusion3 decks7 decks
24%synergy
Arcane Denial
43%inclusion3 decks7 decks
7%synergy
Negate
29%inclusion2 decks7 decks
-10%synergy
Flare of Denial
29%inclusion2 decks7 decks
22%synergy
Foil
29%inclusion2 decks7 decks
23%synergy
Swan Song
29%inclusion2 decks7 decks
2%synergy
Cyber Conversion
29%inclusion2 decks7 decks
25%synergy
Dramatic Reversal
29%inclusion2 decks7 decks
9%synergy
Disallow
29%inclusion2 decks7 decks
22%synergy
Muddle the Mixture
14%inclusion1 decks7 decks
-2%synergy
Frantic Search
14%inclusion1 decks7 decks
-16%synergy
Three Steps Ahead
14%inclusion1 decks7 decks
4%synergy
Refute
14%inclusion1 decks7 decks
9%synergy
Brainstorm
14%inclusion1 decks7 decks
-27%synergy
Aetherize
14%inclusion1 decks7 decks
-15%synergy
Into the Flood Maw
14%inclusion1 decks7 decks
8%synergy
Cryptic Command
14%inclusion1 decks7 decks
3%synergy
Wash Away
14%inclusion1 decks7 decks
10%synergy
Fated Infatuation
14%inclusion1 decks7 decks
13%synergy
Thassa's Rebuff
14%inclusion1 decks7 decks
13%synergy
Mana Leak
14%inclusion1 decks7 decks
8%synergy
Consider
14%inclusion1 decks7 decks
0%synergy
Spell Pierce
14%inclusion1 decks7 decks
6%synergy
Desertion
14%inclusion1 decks7 decks
12%synergy
Sudden Substitution
14%inclusion1 decks7 decks
14%synergy
Cancel
14%inclusion1 decks7 decks
9%synergy
Force of Negation
14%inclusion1 decks7 decks
-1%synergy
March of Swirling Mist
14%inclusion1 decks7 decks
6%synergy
Sorceries
Sea Gate Restoration
57%inclusion4 decks7 decks
42%synergy
Rite of Replication
57%inclusion4 decks7 decks
50%synergy
Aquitect's Will
43%inclusion3 decks7 decks
38%synergy
Distant Melody
29%inclusion2 decks7 decks
24%synergy
Step Through
29%inclusion2 decks7 decks
23%synergy
Walk the Aeons
14%inclusion1 decks7 decks
12%synergy
Quantum Misalignment
14%inclusion1 decks7 decks
11%synergy
Stolen Identity
14%inclusion1 decks7 decks
12%synergy
Self-Reflection
14%inclusion1 decks7 decks
14%synergy
Clone Legion
14%inclusion1 decks7 decks
12%synergy
Time Stretch
14%inclusion1 decks7 decks
10%synergy
Quasiduplicate
14%inclusion1 decks7 decks
11%synergy
Personal Tutor
14%inclusion1 decks7 decks
10%synergy
Timetwister
14%inclusion1 decks7 decks
12%synergy
Season of Weaving
14%inclusion1 decks7 decks
9%synergy
Savor the Moment
14%inclusion1 decks7 decks
13%synergy
Open into Wonder
14%inclusion1 decks7 decks
14%synergy
Time Warp
14%inclusion1 decks7 decks
8%synergy
Acquire
14%inclusion1 decks7 decks
13%synergy
Irenicus's Vile Duplication
14%inclusion1 decks7 decks
6%synergy
Retraced Image
14%inclusion1 decks7 decks
12%synergy
Utility Artifacts
Lightning Greaves
71%inclusion5 decks7 decks
45%synergy
Bident of Thassa
71%inclusion5 decks7 decks
60%synergy
The Indomitable
43%inclusion3 decks7 decks
41%synergy
Vanquisher's Banner
29%inclusion2 decks7 decks
27%synergy
Sword of Feast and Famine
29%inclusion2 decks7 decks
27%synergy
Coat of Arms
29%inclusion2 decks7 decks
27%synergy
Sword of the Animist
29%inclusion2 decks7 decks
23%synergy
Horn of the Mark
29%inclusion2 decks7 decks
29%synergy
Quicksilver Fountain
14%inclusion1 decks7 decks
13%synergy
Wayfarer's Bauble
14%inclusion1 decks7 decks
-4%synergy
Mirror Box
14%inclusion1 decks7 decks
11%synergy
Mind's Eye
14%inclusion1 decks7 decks
13%synergy
Sword of Fire and Ice
14%inclusion1 decks7 decks
14%synergy
Banner of Kinship
14%inclusion1 decks7 decks
12%synergy
Sting, the Glinting Dagger
14%inclusion1 decks7 decks
13%synergy
Door of Destinies
14%inclusion1 decks7 decks
14%synergy
Kefnet's Monument
14%inclusion1 decks7 decks
8%synergy
Isochron Scepter
14%inclusion1 decks7 decks
-4%synergy
Aether Vial
14%inclusion1 decks7 decks
14%synergy
Herald's Horn
14%inclusion1 decks7 decks
12%synergy
Commander's Plate
14%inclusion1 decks7 decks
10%synergy
Dowsing Dagger
14%inclusion1 decks7 decks
13%synergy
Enchantments
Mystic Remora
57%inclusion4 decks7 decks
30%synergy
Reflections of Littjara
57%inclusion4 decks7 decks
54%synergy
Spreading Seas
43%inclusion3 decks7 decks
42%synergy
Reconnaissance Mission
29%inclusion2 decks7 decks
22%synergy
Wizard Class
29%inclusion2 decks7 decks
12%synergy
Propaganda
29%inclusion2 decks7 decks
-1%synergy
Copy Artifact
29%inclusion2 decks7 decks
25%synergy
Back to Basics
14%inclusion1 decks7 decks
7%synergy
Court of Cunning
14%inclusion1 decks7 decks
11%synergy
Imprisoned in the Moon
14%inclusion1 decks7 decks
2%synergy
Vesuvan Duplimancy
14%inclusion1 decks7 decks
11%synergy
Curiosity
14%inclusion1 decks7 decks
11%synergy
Frogify
14%inclusion1 decks7 decks
13%synergy
Leyline of Anticipation
14%inclusion1 decks7 decks
5%synergy
Omniscience
14%inclusion1 decks7 decks
6%synergy
Followed Footsteps
14%inclusion1 decks7 decks
14%synergy
Deeproot Waters
14%inclusion1 decks7 decks
13%synergy
Amphibian Downpour
14%inclusion1 decks7 decks
9%synergy
Utility Lands
Mystic Sanctuary
71%inclusion5 decks7 decks
21%synergy
Nykthos, Shrine to Nyx
71%inclusion5 decks7 decks
55%synergy
Three Tree City
71%inclusion5 decks7 decks
68%synergy
Minamo, School at Water's Edge
57%inclusion4 decks7 decks
45%synergy
Reliquary Tower
57%inclusion4 decks7 decks
1%synergy
Mutavault
43%inclusion3 decks7 decks
42%synergy
Otawara, Soaring City
43%inclusion3 decks7 decks
17%synergy
Castle Vantress
29%inclusion2 decks7 decks
10%synergy
Archway of Innovation
29%inclusion2 decks7 decks
18%synergy
Rivendell
14%inclusion1 decks7 decks
3%synergy
Mistrise Village
14%inclusion1 decks7 decks
5%synergy
Scavenger Grounds
14%inclusion1 decks7 decks
7%synergy
War Room
14%inclusion1 decks7 decks
-2%synergy
Academy Ruins
14%inclusion1 decks7 decks
-4%synergy
Maze of Ith
14%inclusion1 decks7 decks
9%synergy
Muraganda Raceway
14%inclusion1 decks7 decks
12%synergy
Cephalid Coliseum
14%inclusion1 decks7 decks
5%synergy
Amonkhet Raceway
14%inclusion1 decks7 decks
12%synergy
Mana Artifacts
Arcane Signet
86%inclusion6 decks7 decks
21%synergy
Sol Ring
86%inclusion6 decks7 decks
0%synergy
Patchwork Banner
43%inclusion3 decks7 decks
39%synergy
Fellwar Stone
43%inclusion3 decks7 decks
23%synergy
Gauntlet of Power
29%inclusion2 decks7 decks
24%synergy
Caged Sun
29%inclusion2 decks7 decks
17%synergy
Thought Vessel
29%inclusion2 decks7 decks
-23%synergy
Springleaf Drum
29%inclusion2 decks7 decks
25%synergy
Nyx Lotus
29%inclusion2 decks7 decks
25%synergy
Commander's Sphere
14%inclusion1 decks7 decks
4%synergy
Lotus Petal
14%inclusion1 decks7 decks
2%synergy
Throne of Eldraine
14%inclusion1 decks7 decks
5%synergy
Moonsnare Prototype
14%inclusion1 decks7 decks
12%synergy
The Irencrag
14%inclusion1 decks7 decks
14%synergy
Thran Dynamo
14%inclusion1 decks7 decks
1%synergy
Liquimetal Torque
14%inclusion1 decks7 decks
7%synergy
Extraplanar Lens
14%inclusion1 decks7 decks
6%synergy
Misleading Signpost
14%inclusion1 decks7 decks
10%synergy
Lands
Island
86%inclusion6 decks7 decks
-8%synergy
Cavern of Souls
71%inclusion5 decks7 decks
67%synergy
Sea Gate Restoration
57%inclusion4 decks7 decks
42%synergy
Sink into Stupor
57%inclusion4 decks7 decks
35%synergy
Polluted Delta
43%inclusion3 decks7 decks
35%synergy
Flooded Strand
43%inclusion3 decks7 decks
34%synergy
Glasspool Mimic
43%inclusion3 decks7 decks
37%synergy
Misty Rainforest
29%inclusion2 decks7 decks
21%synergy
Urza's Cave
29%inclusion2 decks7 decks
25%synergy
Scalding Tarn
29%inclusion2 decks7 decks
21%synergy
Prismatic Vista
14%inclusion1 decks7 decks
10%synergy
Fabled Passage
14%inclusion1 decks7 decks
11%synergy
Hydroelectric Specimen
14%inclusion1 decks7 decks
1%synergy
Snow-Covered Island
14%inclusion1 decks7 decks
6%synergy
Demolition Field
14%inclusion1 decks7 decks
9%synergy
Path of Ancestry
14%inclusion1 decks7 decks
10%synergy
Gemstone Caverns
14%inclusion1 decks7 decks
8%synergy
Abstergo Entertainment
14%inclusion1 decks7 decks
13%synergy
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