Svyelun of Sea and Sky (Commander) - Optimized Merfolk

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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White Lotus Tile
33%inclusion1 decks3 decks
32%synergy
High Synergy Cards
Deepchannel Mentor
100%inclusion6 decks6 decks
99%synergy
Master of the Pearl Trident
100%inclusion6 decks6 decks
98%synergy
Emperor Mihail II
83%inclusion5 decks6 decks
82%synergy
Merrow Commerce
83%inclusion5 decks6 decks
82%synergy
Seafloor Oracle
83%inclusion5 decks6 decks
82%synergy
Vodalian Hexcatcher
83%inclusion5 decks6 decks
82%synergy
Merrow Reejerey
83%inclusion5 decks6 decks
82%synergy
Merfolk Sovereign
83%inclusion5 decks6 decks
82%synergy
Thada Adel, Acquisitor
83%inclusion5 decks6 decks
82%synergy
Triton Shorestalker
83%inclusion5 decks6 decks
81%synergy
Top Cards
Stonybrook Banneret
83%inclusion5 decks6 decks
80%synergy
Aetherize
83%inclusion5 decks6 decks
55%synergy
Harbinger of the Seas
83%inclusion5 decks6 decks
74%synergy
High Tide
83%inclusion5 decks6 decks
39%synergy
Kindred Discovery
67%inclusion4 decks6 decks
60%synergy
Kopala, Warden of Waves
67%inclusion4 decks6 decks
65%synergy
Pongify
67%inclusion4 decks6 decks
26%synergy
Master of Waves
67%inclusion4 decks6 decks
63%synergy
Deeproot Pilgrimage
67%inclusion4 decks6 decks
65%synergy
Tishana's Tidebinder
67%inclusion4 decks6 decks
62%synergy
Game Changers
Cyclonic Rift
67%inclusion4 decks6 decks
32%synergy
Rhystic Study
50%inclusion3 decks6 decks
16%synergy
Fierce Guardianship
33%inclusion2 decks6 decks
10%synergy
Thassa's Oracle
17%inclusion1 decks6 decks
4%synergy
Force of Will
17%inclusion1 decks6 decks
-1%synergy
Mystical Tutor
17%inclusion1 decks6 decks
-7%synergy
Creatures
Mist-Cloaked Herald
67%inclusion4 decks6 decks
64%synergy
Lullmage Mentor
67%inclusion4 decks6 decks
65%synergy
Wanderwine Prophets
67%inclusion4 decks6 decks
66%synergy
Harbinger of the Tides
67%inclusion4 decks6 decks
65%synergy
Mist Dancer
67%inclusion4 decks6 decks
66%synergy
Silvergill Adept
67%inclusion4 decks6 decks
66%synergy
Lord of Atlantis
67%inclusion4 decks6 decks
65%synergy
Tide Shaper
67%inclusion4 decks6 decks
66%synergy
Thieving Skydiver
67%inclusion4 decks6 decks
62%synergy
Merrow Harbinger
50%inclusion3 decks6 decks
49%synergy
Coralhelm Commander
50%inclusion3 decks6 decks
49%synergy
True-Name Nemesis
50%inclusion3 decks6 decks
49%synergy
Rishadan Dockhand
50%inclusion3 decks6 decks
49%synergy
Thassa, God of the Sea
50%inclusion3 decks6 decks
46%synergy
Tempest Caller
50%inclusion3 decks6 decks
49%synergy
Merfolk Trickster
50%inclusion3 decks6 decks
48%synergy
Metallic Mimic
33%inclusion2 decks6 decks
32%synergy
Mindspring Merfolk
33%inclusion2 decks6 decks
33%synergy
Seahunter
33%inclusion2 decks6 decks
33%synergy
Kiora, the Rising Tide
33%inclusion2 decks6 decks
30%synergy
River Sneak
33%inclusion2 decks6 decks
33%synergy
Tidal Warrior
33%inclusion2 decks6 decks
33%synergy
Summon: Leviathan
33%inclusion2 decks6 decks
32%synergy
Enclave Elite
17%inclusion1 decks6 decks
17%synergy
Roaming Throne
17%inclusion1 decks6 decks
12%synergy
Cosi's Trickster
17%inclusion1 decks6 decks
16%synergy
Salvager of Secrets
17%inclusion1 decks6 decks
16%synergy
Surgespanner
17%inclusion1 decks6 decks
16%synergy
Floodpits Drowner
17%inclusion1 decks6 decks
15%synergy
Merfolk Wayfinder
17%inclusion1 decks6 decks
16%synergy
Adaptive Automaton
17%inclusion1 decks6 decks
15%synergy
Tazeem Roilmage
17%inclusion1 decks6 decks
17%synergy
Scourge of Fleets
17%inclusion1 decks6 decks
4%synergy
Siren Stormtamer
17%inclusion1 decks6 decks
10%synergy
Streambed Aquitects
17%inclusion1 decks6 decks
16%synergy
Merfolk Looter
17%inclusion1 decks6 decks
14%synergy
Slinn Voda, the Rising Deep
17%inclusion1 decks6 decks
15%synergy
Breaching Leviathan
17%inclusion1 decks6 decks
16%synergy
Mistcaller
17%inclusion1 decks6 decks
16%synergy
Raving Visionary
17%inclusion1 decks6 decks
17%synergy
Saprazzan Heir
17%inclusion1 decks6 decks
16%synergy
Mistway Spy
17%inclusion1 decks6 decks
16%synergy
Brineborn Cutthroat
17%inclusion1 decks6 decks
16%synergy
Alandra, Sky Dreamer
17%inclusion1 decks6 decks
10%synergy
Cursecatcher
17%inclusion1 decks6 decks
15%synergy
Vodalian Illusionist
17%inclusion1 decks6 decks
16%synergy
Enclave Cryptologist
17%inclusion1 decks6 decks
16%synergy
Glasspool Mimic
17%inclusion1 decks6 decks
11%synergy
Hullbreaker Horror
17%inclusion1 decks6 decks
-8%synergy
Emry, Lurker of the Loch
17%inclusion1 decks6 decks
5%synergy
Instants
Negate
67%inclusion4 decks6 decks
28%synergy
Reality Shift
67%inclusion4 decks6 decks
39%synergy
Mana Drain
67%inclusion4 decks6 decks
40%synergy
Arcane Denial
67%inclusion4 decks6 decks
31%synergy
Counterspell
67%inclusion4 decks6 decks
0%synergy
Rapid Hybridization
50%inclusion3 decks6 decks
16%synergy
Thassa's Rebuff
50%inclusion3 decks6 decks
49%synergy
An Offer You Can't Refuse
33%inclusion2 decks6 decks
-3%synergy
Spider-Sense
20%inclusion1 decks5 decks
17%synergy
Muddle the Mixture
17%inclusion1 decks6 decks
1%synergy
Brainstorm
17%inclusion1 decks6 decks
-25%synergy
Flare of Denial
17%inclusion1 decks6 decks
10%synergy
Blink of an Eye
17%inclusion1 decks6 decks
15%synergy
Leadership Vacuum
17%inclusion1 decks6 decks
15%synergy
Strix Serenade
17%inclusion1 decks6 decks
7%synergy
Resculpt
17%inclusion1 decks6 decks
-2%synergy
Filter Out
17%inclusion1 decks6 decks
12%synergy
Swan Song
17%inclusion1 decks6 decks
-9%synergy
Force of Negation
17%inclusion1 decks6 decks
1%synergy
Flow of Knowledge
17%inclusion1 decks6 decks
0%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-5%synergy
Masterful Replication
17%inclusion1 decks6 decks
16%synergy
Mystic Confluence
17%inclusion1 decks6 decks
7%synergy
Narset's Reversal
17%inclusion1 decks6 decks
4%synergy
Abjure
17%inclusion1 decks6 decks
12%synergy
March of Swirling Mist
17%inclusion1 decks6 decks
9%synergy
Pact of Negation
17%inclusion1 decks6 decks
6%synergy
Sorceries
Distant Melody
67%inclusion4 decks6 decks
62%synergy
Spectral Deluge
50%inclusion3 decks6 decks
39%synergy
Aquitect's Will
50%inclusion3 decks6 decks
45%synergy
Raise the Palisade
50%inclusion3 decks6 decks
47%synergy
Ponder
33%inclusion2 decks6 decks
4%synergy
Inundate
17%inclusion1 decks6 decks
15%synergy
Sleight of Hand
17%inclusion1 decks6 decks
14%synergy
Walk the Aeons
17%inclusion1 decks6 decks
15%synergy
Rhythmic Water Vortex
17%inclusion1 decks6 decks
17%synergy
Part the Waterveil
17%inclusion1 decks6 decks
16%synergy
Curse of the Swine
17%inclusion1 decks6 decks
5%synergy
Ancestral Vision
17%inclusion1 decks6 decks
15%synergy
Solve the Equation
17%inclusion1 decks6 decks
4%synergy
Utility Artifacts
Bident of Thassa
67%inclusion4 decks6 decks
55%synergy
Sapphire Medallion
67%inclusion4 decks6 decks
10%synergy
Kefnet's Monument
50%inclusion3 decks6 decks
43%synergy
Swiftfoot Boots
50%inclusion3 decks6 decks
22%synergy
Vanquisher's Banner
33%inclusion2 decks6 decks
32%synergy
Sword of Hearth and Home
33%inclusion2 decks6 decks
31%synergy
Herald's Horn
33%inclusion2 decks6 decks
31%synergy
Sword of the Animist
33%inclusion2 decks6 decks
28%synergy
Zephyr Boots
17%inclusion1 decks6 decks
16%synergy
Nettlecyst
17%inclusion1 decks6 decks
14%synergy
Team Pennant
17%inclusion1 decks6 decks
17%synergy
Umezawa's Jitte
17%inclusion1 decks6 decks
16%synergy
Rogue's Gloves
17%inclusion1 decks6 decks
16%synergy
Wayfarer's Bauble
17%inclusion1 decks6 decks
-2%synergy
Masterwork of Ingenuity
17%inclusion1 decks6 decks
16%synergy
Leyline Axe
17%inclusion1 decks6 decks
14%synergy
Mantle of Tides
17%inclusion1 decks6 decks
16%synergy
Chariot of Victory
17%inclusion1 decks6 decks
17%synergy
Coat of Arms
17%inclusion1 decks6 decks
15%synergy
Haunted Cloak
17%inclusion1 decks6 decks
16%synergy
Sword of Truth and Justice
17%inclusion1 decks6 decks
16%synergy
Armory of Iroas
17%inclusion1 decks6 decks
17%synergy
Door of Destinies
17%inclusion1 decks6 decks
16%synergy
Fireshrieker
17%inclusion1 decks6 decks
11%synergy
Sanctuary Blade
17%inclusion1 decks6 decks
17%synergy
Sword of War and Peace
17%inclusion1 decks6 decks
16%synergy
Goldvein Pick
17%inclusion1 decks6 decks
16%synergy
Eldrazi Monument
17%inclusion1 decks6 decks
16%synergy
Lightning Greaves
17%inclusion1 decks6 decks
-10%synergy
Loxodon Warhammer
17%inclusion1 decks6 decks
15%synergy
Blackblade Reforged
17%inclusion1 decks6 decks
12%synergy
Hero's Blade
17%inclusion1 decks6 decks
16%synergy
Forebear's Blade
17%inclusion1 decks6 decks
16%synergy
Aether Vial
17%inclusion1 decks6 decks
16%synergy
Enchantments
Mystic Remora
50%inclusion3 decks6 decks
23%synergy
Deeproot Waters
50%inclusion3 decks6 decks
49%synergy
Spreading Seas
50%inclusion3 decks6 decks
49%synergy
Reflections of Littjara
50%inclusion3 decks6 decks
47%synergy
Imprisoned in the Moon
33%inclusion2 decks6 decks
21%synergy
Witness Protection
33%inclusion2 decks6 decks
28%synergy
Back to Basics
17%inclusion1 decks6 decks
9%synergy
Reconnaissance Mission
17%inclusion1 decks6 decks
10%synergy
Curiosity
17%inclusion1 decks6 decks
14%synergy
Aqueous Form
17%inclusion1 decks6 decks
12%synergy
Eldrazi Conscription
17%inclusion1 decks6 decks
16%synergy
Wizard Class
17%inclusion1 decks6 decks
0%synergy
Unable to Scream
17%inclusion1 decks6 decks
13%synergy
Steal Enchantment
17%inclusion1 decks6 decks
15%synergy
Octopus Umbra
17%inclusion1 decks6 decks
16%synergy
Amphibian Downpour
17%inclusion1 decks6 decks
11%synergy
Propaganda
17%inclusion1 decks6 decks
-13%synergy
Planeswalkers
Mu Yanling
17%inclusion1 decks6 decks
16%synergy
Utility Lands
Reliquary Tower
83%inclusion5 decks6 decks
27%synergy
Mystic Sanctuary
67%inclusion4 decks6 decks
16%synergy
Castle Vantress
50%inclusion3 decks6 decks
31%synergy
Nykthos, Shrine to Nyx
33%inclusion2 decks6 decks
17%synergy
Minamo, School at Water's Edge
17%inclusion1 decks6 decks
5%synergy
Halimar Depths
17%inclusion1 decks6 decks
6%synergy
Riptide Laboratory
17%inclusion1 decks6 decks
6%synergy
Tolaria West
17%inclusion1 decks6 decks
11%synergy
Scavenger Grounds
17%inclusion1 decks6 decks
9%synergy
Mutavault
17%inclusion1 decks6 decks
16%synergy
Lonely Sandbar
17%inclusion1 decks6 decks
2%synergy
Throne of the High City
17%inclusion1 decks6 decks
17%synergy
Cephalid Coliseum
17%inclusion1 decks6 decks
8%synergy
Three Tree City
17%inclusion1 decks6 decks
13%synergy
Otawara, Soaring City
17%inclusion1 decks6 decks
-9%synergy
Rogue's Passage
17%inclusion1 decks6 decks
2%synergy
Mana Artifacts
Sol Ring
83%inclusion5 decks6 decks
-2%synergy
Arcane Signet
67%inclusion4 decks6 decks
2%synergy
Thought Vessel
67%inclusion4 decks6 decks
15%synergy
Sky Diamond
50%inclusion3 decks6 decks
26%synergy
Patchwork Banner
50%inclusion3 decks6 decks
47%synergy
Caged Sun
33%inclusion2 decks6 decks
22%synergy
Heraldic Banner
33%inclusion2 decks6 decks
27%synergy
Hedron Archive
17%inclusion1 decks6 decks
11%synergy
Sol Talisman
17%inclusion1 decks6 decks
15%synergy
Fractured Powerstone
17%inclusion1 decks6 decks
16%synergy
Springleaf Drum
17%inclusion1 decks6 decks
14%synergy
Mind Stone
17%inclusion1 decks6 decks
-20%synergy
Lands
Island
100%inclusion6 decks6 decks
7%synergy
Path of Ancestry
83%inclusion5 decks6 decks
79%synergy
Myriad Landscape
50%inclusion3 decks6 decks
23%synergy
Cavern of Souls
17%inclusion1 decks6 decks
12%synergy
Opal Palace
17%inclusion1 decks6 decks
16%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-5%synergy
Glasspool Mimic
17%inclusion1 decks6 decks
11%synergy
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