Svyelun of Sea and Sky (Commander) - Upgraded Control

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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Sorceries
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Enchantments
Utility Lands
Mana Artifacts
Lands
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Kindred Discovery
100%inclusion6 decks6 decks
93%synergy
Coralhelm Commander
83%inclusion5 decks6 decks
83%synergy
Emperor Mihail II
83%inclusion5 decks6 decks
82%synergy
Harbinger of the Tides
83%inclusion5 decks6 decks
82%synergy
Lord of Atlantis
83%inclusion5 decks6 decks
82%synergy
Seafloor Oracle
83%inclusion5 decks6 decks
82%synergy
Kopala, Warden of Waves
83%inclusion5 decks6 decks
82%synergy
Deeproot Pilgrimage
83%inclusion5 decks6 decks
82%synergy
Vodalian Hexcatcher
83%inclusion5 decks6 decks
82%synergy
Merrow Reejerey
83%inclusion5 decks6 decks
82%synergy
Top Cards
Stonybrook Banneret
83%inclusion5 decks6 decks
80%synergy
Merfolk Sovereign
83%inclusion5 decks6 decks
82%synergy
Tishana's Tidebinder
83%inclusion5 decks6 decks
79%synergy
Lullmage Mentor
83%inclusion5 decks6 decks
82%synergy
Master of the Pearl Trident
83%inclusion5 decks6 decks
82%synergy
Reflections of Littjara
83%inclusion5 decks6 decks
80%synergy
Thieving Skydiver
83%inclusion5 decks6 decks
79%synergy
Negate
67%inclusion4 decks6 decks
28%synergy
Deepchannel Mentor
67%inclusion4 decks6 decks
65%synergy
Seahunter
67%inclusion4 decks6 decks
66%synergy
Game Changers
Cyclonic Rift
50%inclusion3 decks6 decks
14%synergy
Fierce Guardianship
33%inclusion2 decks6 decks
10%synergy
Mystical Tutor
33%inclusion2 decks6 decks
9%synergy
Rhystic Study
33%inclusion2 decks6 decks
-1%synergy
Force of Will
17%inclusion1 decks6 decks
-1%synergy
Creatures
Thada Adel, Acquisitor
67%inclusion4 decks6 decks
65%synergy
Tempest Caller
67%inclusion4 decks6 decks
66%synergy
Empress Galina
67%inclusion4 decks6 decks
66%synergy
Wake Thrasher
67%inclusion4 decks6 decks
66%synergy
Merrow Harbinger
50%inclusion3 decks6 decks
49%synergy
Surgespanner
50%inclusion3 decks6 decks
50%synergy
Streambed Aquitects
50%inclusion3 decks6 decks
49%synergy
River Sneak
50%inclusion3 decks6 decks
49%synergy
Harbinger of the Seas
50%inclusion3 decks6 decks
41%synergy
Alandra, Sky Dreamer
50%inclusion3 decks6 decks
43%synergy
Cursecatcher
50%inclusion3 decks6 decks
48%synergy
Mist Dancer
50%inclusion3 decks6 decks
49%synergy
Tide Shaper
50%inclusion3 decks6 decks
49%synergy
Sea Scryer
50%inclusion3 decks6 decks
49%synergy
Master of Waves
33%inclusion2 decks6 decks
29%synergy
True-Name Nemesis
33%inclusion2 decks6 decks
32%synergy
Stormtide Leviathan
33%inclusion2 decks6 decks
26%synergy
Metallic Mimic
33%inclusion2 decks6 decks
32%synergy
Cosi's Trickster
33%inclusion2 decks6 decks
33%synergy
Sigil Tracer
33%inclusion2 decks6 decks
32%synergy
Kiora, the Rising Tide
33%inclusion2 decks6 decks
30%synergy
Thassa, God of the Sea
33%inclusion2 decks6 decks
30%synergy
Triton Shorestalker
33%inclusion2 decks6 decks
31%synergy
Mist-Cloaked Herald
33%inclusion2 decks6 decks
31%synergy
Slinn Voda, the Rising Deep
33%inclusion2 decks6 decks
32%synergy
Mistcaller
33%inclusion2 decks6 decks
32%synergy
Spark Double
33%inclusion2 decks6 decks
20%synergy
Wanderwine Prophets
33%inclusion2 decks6 decks
33%synergy
Silvergill Adept
33%inclusion2 decks6 decks
33%synergy
Talrand, Sky Summoner
33%inclusion2 decks6 decks
19%synergy
Gray Harbor Merfolk
33%inclusion2 decks6 decks
33%synergy
Merfolk Trickster
33%inclusion2 decks6 decks
32%synergy
Mindspring Merfolk
20%inclusion1 decks5 decks
19%synergy
Summon: Leviathan
20%inclusion1 decks5 decks
18%synergy
Eluge, the Shoreless Sea
17%inclusion1 decks6 decks
8%synergy
Seasinger
17%inclusion1 decks6 decks
16%synergy
Wonder
17%inclusion1 decks6 decks
11%synergy
Thassa, Deep-Dwelling
17%inclusion1 decks6 decks
13%synergy
Roaming Throne
17%inclusion1 decks6 decks
12%synergy
Rishadan Dockhand
17%inclusion1 decks6 decks
16%synergy
Hydroelectric Specimen
17%inclusion1 decks6 decks
4%synergy
Merfolk Looter
17%inclusion1 decks6 decks
14%synergy
Rootwater Thief
17%inclusion1 decks6 decks
16%synergy
Forensic Researcher
17%inclusion1 decks6 decks
15%synergy
Sakashima of a Thousand Faces
17%inclusion1 decks6 decks
11%synergy
Tidal Warrior
17%inclusion1 decks6 decks
16%synergy
Enduring Curiosity
17%inclusion1 decks6 decks
11%synergy
Benthic Biomancer
17%inclusion1 decks6 decks
16%synergy
Merfolk Spy
17%inclusion1 decks6 decks
16%synergy
Hullbreaker Horror
17%inclusion1 decks6 decks
-8%synergy
Instants
Aetherize
67%inclusion4 decks6 decks
39%synergy
Counterspell
67%inclusion4 decks6 decks
0%synergy
High Tide
67%inclusion4 decks6 decks
22%synergy
Rapid Hybridization
50%inclusion3 decks6 decks
16%synergy
Pongify
33%inclusion2 decks6 decks
-7%synergy
Frantic Search
33%inclusion2 decks6 decks
4%synergy
Opt
33%inclusion2 decks6 decks
8%synergy
Mana Drain
33%inclusion2 decks6 decks
6%synergy
Strix Serenade
33%inclusion2 decks6 decks
24%synergy
Swan Song
33%inclusion2 decks6 decks
8%synergy
Saw It Coming
33%inclusion2 decks6 decks
30%synergy
Arcane Denial
33%inclusion2 decks6 decks
-3%synergy
Thassa's Rebuff
33%inclusion2 decks6 decks
32%synergy
Disdainful Stroke
17%inclusion1 decks6 decks
11%synergy
Forceful Denial
17%inclusion1 decks6 decks
16%synergy
An Offer You Can't Refuse
17%inclusion1 decks6 decks
-19%synergy
Brainstorm
17%inclusion1 decks6 decks
-25%synergy
Flare of Denial
17%inclusion1 decks6 decks
10%synergy
Fading Hope
17%inclusion1 decks6 decks
15%synergy
Repulse
17%inclusion1 decks6 decks
16%synergy
Reality Shift
17%inclusion1 decks6 decks
-12%synergy
Cancel
17%inclusion1 decks6 decks
11%synergy
Unsummon
17%inclusion1 decks6 decks
12%synergy
Disallow
17%inclusion1 decks6 decks
10%synergy
Into the Flood Maw
17%inclusion1 decks6 decks
11%synergy
Engulf the Shore
17%inclusion1 decks6 decks
8%synergy
Cryptic Command
17%inclusion1 decks6 decks
5%synergy
Anticipate
17%inclusion1 decks6 decks
14%synergy
Get Out
17%inclusion1 decks6 decks
14%synergy
Flow of Knowledge
17%inclusion1 decks6 decks
0%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-4%synergy
Into the Roil
17%inclusion1 decks6 decks
14%synergy
Misdirection
17%inclusion1 decks6 decks
12%synergy
Mana Leak
17%inclusion1 decks6 decks
10%synergy
Annul
17%inclusion1 decks6 decks
15%synergy
Spell Pierce
17%inclusion1 decks6 decks
8%synergy
Long River's Pull
17%inclusion1 decks6 decks
12%synergy
Sorceries
Distant Melody
67%inclusion4 decks6 decks
62%synergy
Aquitect's Will
50%inclusion3 decks6 decks
45%synergy
Sea Gate Restoration
33%inclusion2 decks6 decks
19%synergy
Crashing Tide
33%inclusion2 decks6 decks
33%synergy
Raise the Palisade
33%inclusion2 decks6 decks
30%synergy
Rite of Replication
33%inclusion2 decks6 decks
27%synergy
Chart a Course
17%inclusion1 decks6 decks
12%synergy
Slip Through Space
17%inclusion1 decks6 decks
12%synergy
Curse of the Swine
17%inclusion1 decks6 decks
5%synergy
Rise and Shine
17%inclusion1 decks6 decks
14%synergy
Temporal Manipulation
17%inclusion1 decks6 decks
13%synergy
Sleep
17%inclusion1 decks6 decks
15%synergy
Borrowing 100,000 Arrows
17%inclusion1 decks6 decks
16%synergy
Irenicus's Vile Duplication
17%inclusion1 decks6 decks
8%synergy
Retraced Image
17%inclusion1 decks6 decks
14%synergy
Preordain
17%inclusion1 decks6 decks
-8%synergy
Spectral Deluge
17%inclusion1 decks6 decks
5%synergy
River's Rebuke
17%inclusion1 decks6 decks
13%synergy
Savor the Moment
17%inclusion1 decks6 decks
16%synergy
Open into Wonder
17%inclusion1 decks6 decks
16%synergy
Maddening Cacophony
17%inclusion1 decks6 decks
9%synergy
Traumatize
17%inclusion1 decks6 decks
12%synergy
Utility Artifacts
Sapphire Medallion
67%inclusion4 decks6 decks
10%synergy
Vanquisher's Banner
50%inclusion3 decks6 decks
49%synergy
Bident of Thassa
50%inclusion3 decks6 decks
38%synergy
Quicksilver Fountain
33%inclusion2 decks6 decks
32%synergy
Coat of Arms
33%inclusion2 decks6 decks
32%synergy
Banner of Kinship
33%inclusion2 decks6 decks
31%synergy
Door of Destinies
33%inclusion2 decks6 decks
32%synergy
Herald's Horn
33%inclusion2 decks6 decks
31%synergy
The Indomitable
17%inclusion1 decks6 decks
14%synergy
Sword of Fire and Ice
17%inclusion1 decks6 decks
16%synergy
Wayfarer's Bauble
17%inclusion1 decks6 decks
-2%synergy
Mnemonic Sphere
17%inclusion1 decks6 decks
15%synergy
Robe of the Archmagi
17%inclusion1 decks6 decks
15%synergy
Stoneforge Masterwork
17%inclusion1 decks6 decks
16%synergy
Folio of Fancies
17%inclusion1 decks6 decks
13%synergy
Winged Boots
17%inclusion1 decks6 decks
14%synergy
Urza's Incubator
17%inclusion1 decks6 decks
15%synergy
Kefnet's Monument
17%inclusion1 decks6 decks
10%synergy
Swiftfoot Boots
17%inclusion1 decks6 decks
-11%synergy
Lightning Greaves
17%inclusion1 decks6 decks
-10%synergy
Sword of Feast and Famine
17%inclusion1 decks6 decks
15%synergy
Aether Vial
17%inclusion1 decks6 decks
16%synergy
Enchantments
Deeproot Waters
67%inclusion4 decks6 decks
65%synergy
Merrow Commerce
67%inclusion4 decks6 decks
66%synergy
Spreading Seas
50%inclusion3 decks6 decks
49%synergy
Propaganda
33%inclusion2 decks6 decks
4%synergy
Sea's Claim
33%inclusion2 decks6 decks
33%synergy
Back to Basics
17%inclusion1 decks6 decks
9%synergy
Reconnaissance Mission
17%inclusion1 decks6 decks
10%synergy
Teferi's Ageless Insight
17%inclusion1 decks6 decks
0%synergy
Psychic Corrosion
17%inclusion1 decks6 decks
9%synergy
Aqueous Form
17%inclusion1 decks6 decks
12%synergy
Imprisoned in the Moon
17%inclusion1 decks6 decks
5%synergy
Military Intelligence
17%inclusion1 decks6 decks
15%synergy
Copy Artifact
17%inclusion1 decks6 decks
13%synergy
Coastal Piracy
17%inclusion1 decks6 decks
13%synergy
Mystic Remora
17%inclusion1 decks6 decks
-11%synergy
Shark Typhoon
17%inclusion1 decks6 decks
9%synergy
Leyline of Anticipation
17%inclusion1 decks6 decks
7%synergy
Eaten by Piranhas
17%inclusion1 decks6 decks
13%synergy
Equilibrium
17%inclusion1 decks6 decks
16%synergy
Combat Research
17%inclusion1 decks6 decks
14%synergy
Utility Lands
Mystic Sanctuary
83%inclusion5 decks6 decks
32%synergy
Minamo, School at Water's Edge
50%inclusion3 decks6 decks
38%synergy
Castle Vantress
50%inclusion3 decks6 decks
31%synergy
Three Tree City
50%inclusion3 decks6 decks
47%synergy
Rivendell
33%inclusion2 decks6 decks
21%synergy
Scavenger Grounds
33%inclusion2 decks6 decks
26%synergy
War Room
33%inclusion2 decks6 decks
17%synergy
Nykthos, Shrine to Nyx
33%inclusion2 decks6 decks
17%synergy
Academy Ruins
33%inclusion2 decks6 decks
15%synergy
Archway of Innovation
33%inclusion2 decks6 decks
22%synergy
Reliquary Tower
33%inclusion2 decks6 decks
-23%synergy
Faerie Conclave
17%inclusion1 decks6 decks
15%synergy
Tyrite Sanctum
17%inclusion1 decks6 decks
15%synergy
Halimar Depths
17%inclusion1 decks6 decks
6%synergy
Lonely Sandbar
17%inclusion1 decks6 decks
2%synergy
Otawara, Soaring City
17%inclusion1 decks6 decks
-8%synergy
Rogue's Passage
17%inclusion1 decks6 decks
2%synergy
Mana Artifacts
Arcane Signet
100%inclusion6 decks6 decks
35%synergy
Sol Ring
67%inclusion4 decks6 decks
-19%synergy
Sky Diamond
50%inclusion3 decks6 decks
26%synergy
Heraldic Banner
50%inclusion3 decks6 decks
44%synergy
Mind Stone
33%inclusion2 decks6 decks
-4%synergy
Nyx Lotus
33%inclusion2 decks6 decks
29%synergy
Caged Sun
17%inclusion1 decks6 decks
5%synergy
Hedron Archive
17%inclusion1 decks6 decks
11%synergy
Patchwork Banner
17%inclusion1 decks6 decks
13%synergy
Thought Vessel
17%inclusion1 decks6 decks
-35%synergy
Eye of Ramos
17%inclusion1 decks6 decks
16%synergy
Misleading Signpost
17%inclusion1 decks6 decks
12%synergy
Lands
Island
100%inclusion6 decks6 decks
7%synergy
Myriad Landscape
33%inclusion2 decks6 decks
6%synergy
Sea Gate Restoration
33%inclusion2 decks6 decks
19%synergy
Cavern of Souls
33%inclusion2 decks6 decks
29%synergy
Path of Ancestry
33%inclusion2 decks6 decks
29%synergy
Prismatic Vista
17%inclusion1 decks6 decks
12%synergy
Misty Rainforest
17%inclusion1 decks6 decks
9%synergy
Hydroelectric Specimen
17%inclusion1 decks6 decks
4%synergy
Opal Palace
17%inclusion1 decks6 decks
16%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-4%synergy
Scalding Tarn
17%inclusion1 decks6 decks
9%synergy
Polluted Delta
17%inclusion1 decks6 decks
9%synergy
Flooded Strand
17%inclusion1 decks6 decks
8%synergy
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