Svyelun of Sea and Sky (Commander) - Optimized Aggro

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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Attuma, Atlantean Warlord
33%inclusion1 decks3 decks
32%synergy
High Synergy Cards
Silvergill Adept
100%inclusion6 decks6 decks
99%synergy
Emperor Mihail II
100%inclusion6 decks6 decks
99%synergy
Tide Shaper
100%inclusion6 decks6 decks
99%synergy
Lord of Atlantis
100%inclusion6 decks6 decks
99%synergy
Kopala, Warden of Waves
100%inclusion6 decks6 decks
99%synergy
Vodalian Hexcatcher
100%inclusion6 decks6 decks
98%synergy
Merrow Reejerey
100%inclusion6 decks6 decks
98%synergy
Merfolk Sovereign
100%inclusion6 decks6 decks
98%synergy
Master of the Pearl Trident
100%inclusion6 decks6 decks
98%synergy
Triton Shorestalker
100%inclusion6 decks6 decks
97%synergy
Top Cards
Stonybrook Banneret
100%inclusion6 decks6 decks
96%synergy
Harbinger of the Seas
100%inclusion6 decks6 decks
91%synergy
Counterspell
100%inclusion6 decks6 decks
33%synergy
Bident of Thassa
100%inclusion6 decks6 decks
88%synergy
Sapphire Medallion
100%inclusion6 decks6 decks
42%synergy
Kindred Discovery
83%inclusion5 decks6 decks
77%synergy
Merrow Harbinger
83%inclusion5 decks6 decks
82%synergy
Master of Waves
83%inclusion5 decks6 decks
80%synergy
Deeproot Pilgrimage
83%inclusion5 decks6 decks
82%synergy
Tishana's Tidebinder
83%inclusion5 decks6 decks
79%synergy
Game Changers
Rhystic Study
67%inclusion4 decks6 decks
33%synergy
Cyclonic Rift
50%inclusion3 decks6 decks
16%synergy
Thassa's Oracle
33%inclusion2 decks6 decks
20%synergy
Fierce Guardianship
33%inclusion2 decks6 decks
10%synergy
Ancient Tomb
17%inclusion1 decks6 decks
5%synergy
The One Ring
17%inclusion1 decks6 decks
4%synergy
Mystical Tutor
17%inclusion1 decks6 decks
-7%synergy
Creatures
Wanderwine Prophets
83%inclusion5 decks6 decks
83%synergy
Harbinger of the Tides
83%inclusion5 decks6 decks
82%synergy
Cursecatcher
83%inclusion5 decks6 decks
82%synergy
Thieving Skydiver
83%inclusion5 decks6 decks
79%synergy
Merfolk Trickster
83%inclusion5 decks6 decks
82%synergy
Seafloor Oracle
83%inclusion5 decks6 decks
82%synergy
True-Name Nemesis
67%inclusion4 decks6 decks
66%synergy
Deepchannel Mentor
67%inclusion4 decks6 decks
65%synergy
Seahunter
67%inclusion4 decks6 decks
66%synergy
Mist-Cloaked Herald
67%inclusion4 decks6 decks
64%synergy
Lullmage Mentor
67%inclusion4 decks6 decks
65%synergy
Thada Adel, Acquisitor
67%inclusion4 decks6 decks
65%synergy
Mist Dancer
67%inclusion4 decks6 decks
66%synergy
Coralhelm Commander
50%inclusion3 decks6 decks
49%synergy
Rishadan Dockhand
50%inclusion3 decks6 decks
49%synergy
River Sneak
50%inclusion3 decks6 decks
49%synergy
Tempest Caller
50%inclusion3 decks6 decks
49%synergy
Forensic Researcher
33%inclusion2 decks6 decks
32%synergy
Mistcaller
33%inclusion2 decks6 decks
32%synergy
Glasspool Mimic
33%inclusion2 decks6 decks
27%synergy
Empress Galina
33%inclusion2 decks6 decks
32%synergy
Wake Thrasher
33%inclusion2 decks6 decks
33%synergy
Tidebinder Mage
33%inclusion2 decks6 decks
33%synergy
Azami, Lady of Scrolls
17%inclusion1 decks6 decks
13%synergy
Merfolk of the Pearl Trident
17%inclusion1 decks6 decks
17%synergy
Ambassador Laquatus
17%inclusion1 decks6 decks
16%synergy
Roaming Throne
17%inclusion1 decks6 decks
12%synergy
Floodpits Drowner
17%inclusion1 decks6 decks
15%synergy
Reef Shaman
17%inclusion1 decks6 decks
16%synergy
Mothdust Changeling
17%inclusion1 decks6 decks
16%synergy
Sigil Tracer
17%inclusion1 decks6 decks
15%synergy
Hydroelectric Specimen
17%inclusion1 decks6 decks
3%synergy
Kiora, the Rising Tide
17%inclusion1 decks6 decks
13%synergy
Merfolk Looter
17%inclusion1 decks6 decks
14%synergy
Drift of Phantasms
17%inclusion1 decks6 decks
14%synergy
Slinn Voda, the Rising Deep
17%inclusion1 decks6 decks
16%synergy
Merfolk Assassin
17%inclusion1 decks6 decks
17%synergy
Alandra, Sky Dreamer
17%inclusion1 decks6 decks
10%synergy
Tidal Warrior
17%inclusion1 decks6 decks
16%synergy
Enduring Curiosity
17%inclusion1 decks6 decks
10%synergy
Defiler of Dreams
17%inclusion1 decks6 decks
8%synergy
Ink Dissolver
17%inclusion1 decks6 decks
17%synergy
Drowner of Secrets
17%inclusion1 decks6 decks
16%synergy
Sakashima the Impostor
17%inclusion1 decks6 decks
14%synergy
Benthic Biomancer
17%inclusion1 decks6 decks
16%synergy
Phantasmal Image
17%inclusion1 decks6 decks
11%synergy
Gray Harbor Merfolk
17%inclusion1 decks6 decks
16%synergy
Sage of Fables
17%inclusion1 decks6 decks
16%synergy
Instants
Negate
83%inclusion5 decks6 decks
45%synergy
High Tide
83%inclusion5 decks6 decks
39%synergy
Brainstorm
50%inclusion3 decks6 decks
9%synergy
Swan Song
50%inclusion3 decks6 decks
24%synergy
Pongify
33%inclusion2 decks6 decks
-7%synergy
Rapid Hybridization
33%inclusion2 decks6 decks
-1%synergy
Transcendent Message
33%inclusion2 decks6 decks
31%synergy
An Offer You Can't Refuse
33%inclusion2 decks6 decks
-4%synergy
Reality Shift
33%inclusion2 decks6 decks
6%synergy
Mana Drain
33%inclusion2 decks6 decks
6%synergy
Aetherize
33%inclusion2 decks6 decks
4%synergy
Resculpt
33%inclusion2 decks6 decks
15%synergy
Cryptic Command
33%inclusion2 decks6 decks
22%synergy
Arcane Denial
33%inclusion2 decks6 decks
-3%synergy
Force of Negation
33%inclusion2 decks6 decks
18%synergy
Thassa's Rebuff
33%inclusion2 decks6 decks
32%synergy
Muddle the Mixture
17%inclusion1 decks6 decks
1%synergy
Frantic Search
17%inclusion1 decks6 decks
-13%synergy
Deliberate
17%inclusion1 decks6 decks
14%synergy
Stubborn Denial
17%inclusion1 decks6 decks
14%synergy
Flare of Denial
17%inclusion1 decks6 decks
10%synergy
Mindbreak Trap
17%inclusion1 decks6 decks
11%synergy
Blue Elemental Blast
17%inclusion1 decks6 decks
16%synergy
Nexus of Fate
17%inclusion1 decks6 decks
11%synergy
Opt
17%inclusion1 decks6 decks
-8%synergy
Foil
17%inclusion1 decks6 decks
11%synergy
Unsummon
17%inclusion1 decks6 decks
12%synergy
Archmage's Charm
17%inclusion1 decks6 decks
0%synergy
Filter Out
17%inclusion1 decks6 decks
13%synergy
Wash Away
17%inclusion1 decks6 decks
12%synergy
Snap
17%inclusion1 decks6 decks
-2%synergy
Wizard's Retort
17%inclusion1 decks6 decks
12%synergy
Memory Lapse
17%inclusion1 decks6 decks
14%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-5%synergy
Mana Leak
17%inclusion1 decks6 decks
10%synergy
Shimmering Mirage
17%inclusion1 decks6 decks
14%synergy
Spell Pierce
17%inclusion1 decks6 decks
8%synergy
Boomerang
17%inclusion1 decks6 decks
15%synergy
Pact of Negation
17%inclusion1 decks6 decks
6%synergy
Sorceries
Aquitect's Will
67%inclusion4 decks6 decks
61%synergy
Raise the Palisade
67%inclusion4 decks6 decks
64%synergy
Distant Melody
50%inclusion3 decks6 decks
45%synergy
Ponder
33%inclusion2 decks6 decks
4%synergy
Windfall
33%inclusion2 decks6 decks
11%synergy
Sea Gate Restoration
33%inclusion2 decks6 decks
19%synergy
Echo of Eons
17%inclusion1 decks6 decks
14%synergy
Fabricate
17%inclusion1 decks6 decks
-5%synergy
Serum Visions
17%inclusion1 decks6 decks
7%synergy
Temporal Manipulation
17%inclusion1 decks6 decks
13%synergy
Bribery
17%inclusion1 decks6 decks
13%synergy
Preordain
17%inclusion1 decks6 decks
-7%synergy
Spectral Deluge
17%inclusion1 decks6 decks
6%synergy
Step Through
17%inclusion1 decks6 decks
11%synergy
Timetwister
17%inclusion1 decks6 decks
14%synergy
Time Spiral
17%inclusion1 decks6 decks
15%synergy
Utility Artifacts
Kefnet's Monument
67%inclusion4 decks6 decks
60%synergy
Herald's Horn
50%inclusion3 decks6 decks
48%synergy
Lightning Greaves
50%inclusion3 decks6 decks
24%synergy
Mindlink Mech
17%inclusion1 decks6 decks
16%synergy
Quicksilver Fountain
17%inclusion1 decks6 decks
15%synergy
Soul-Guide Lantern
17%inclusion1 decks6 decks
12%synergy
Robe of the Archmagi
17%inclusion1 decks6 decks
16%synergy
Banner of Kinship
17%inclusion1 decks6 decks
14%synergy
Vanquisher's Banner
17%inclusion1 decks6 decks
15%synergy
Door of Destinies
17%inclusion1 decks6 decks
16%synergy
Winter Moon
17%inclusion1 decks6 decks
12%synergy
Diviner's Wand
17%inclusion1 decks6 decks
16%synergy
Swiftfoot Boots
17%inclusion1 decks6 decks
-11%synergy
Throne of the God-Pharaoh
17%inclusion1 decks6 decks
16%synergy
Pariah's Shield
17%inclusion1 decks6 decks
17%synergy
Aether Vial
17%inclusion1 decks6 decks
16%synergy
Enchantments
Deeproot Waters
83%inclusion5 decks6 decks
82%synergy
Merrow Commerce
83%inclusion5 decks6 decks
82%synergy
Reflections of Littjara
67%inclusion4 decks6 decks
63%synergy
Spreading Seas
50%inclusion3 decks6 decks
49%synergy
Reconnaissance Mission
33%inclusion2 decks6 decks
26%synergy
Mystic Remora
33%inclusion2 decks6 decks
6%synergy
Counterbalance
17%inclusion1 decks6 decks
13%synergy
Intruder Alarm
17%inclusion1 decks6 decks
14%synergy
Imprisoned in the Moon
17%inclusion1 decks6 decks
5%synergy
Unstoppable Plan
17%inclusion1 decks6 decks
9%synergy
Military Intelligence
17%inclusion1 decks6 decks
15%synergy
Retreat to Coralhelm
17%inclusion1 decks6 decks
14%synergy
Planeswalkers
Tamiyo, the Moon Sage
17%inclusion1 decks6 decks
15%synergy
Utility Lands
Mystic Sanctuary
100%inclusion6 decks6 decks
49%synergy
Nykthos, Shrine to Nyx
67%inclusion4 decks6 decks
50%synergy
Mutavault
50%inclusion3 decks6 decks
49%synergy
Castle Vantress
50%inclusion3 decks6 decks
31%synergy
Otawara, Soaring City
50%inclusion3 decks6 decks
25%synergy
Minamo, School at Water's Edge
33%inclusion2 decks6 decks
21%synergy
Reliquary Tower
33%inclusion2 decks6 decks
-23%synergy
Three Tree City
33%inclusion2 decks6 decks
30%synergy
Hall of Storm Giants
17%inclusion1 decks6 decks
14%synergy
Remote Isle
17%inclusion1 decks6 decks
12%synergy
Rivendell
17%inclusion1 decks6 decks
5%synergy
Halimar Depths
17%inclusion1 decks6 decks
7%synergy
Riptide Laboratory
17%inclusion1 decks6 decks
6%synergy
Desert of the Mindful
17%inclusion1 decks6 decks
13%synergy
Svyelunite Temple
17%inclusion1 decks6 decks
16%synergy
Scavenger Grounds
17%inclusion1 decks6 decks
9%synergy
War Room
17%inclusion1 decks6 decks
1%synergy
Lonely Sandbar
17%inclusion1 decks6 decks
2%synergy
Saprazzan Skerry
17%inclusion1 decks6 decks
14%synergy
Field of Ruin
17%inclusion1 decks6 decks
14%synergy
Mana Artifacts
Sol Ring
100%inclusion6 decks6 decks
15%synergy
Arcane Signet
67%inclusion4 decks6 decks
2%synergy
Thought Vessel
50%inclusion3 decks6 decks
-2%synergy
Patchwork Banner
33%inclusion2 decks6 decks
30%synergy
Sky Diamond
17%inclusion1 decks6 decks
-7%synergy
Fellwar Stone
17%inclusion1 decks6 decks
-3%synergy
Springleaf Drum
17%inclusion1 decks6 decks
13%synergy
Nyx Lotus
17%inclusion1 decks6 decks
13%synergy
Lands
Island
100%inclusion6 decks6 decks
7%synergy
Path of Ancestry
50%inclusion3 decks6 decks
46%synergy
Sea Gate Restoration
33%inclusion2 decks6 decks
19%synergy
Cavern of Souls
33%inclusion2 decks6 decks
29%synergy
Glasspool Mimic
33%inclusion2 decks6 decks
27%synergy
Myriad Landscape
17%inclusion1 decks6 decks
-10%synergy
Hydroelectric Specimen
17%inclusion1 decks6 decks
3%synergy
Demolition Field
17%inclusion1 decks6 decks
11%synergy
Sink into Stupor
17%inclusion1 decks6 decks
-5%synergy
Gemstone Caverns
17%inclusion1 decks6 decks
11%synergy
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