Merfolk 
Main deck (60)
Creatures (28)
Instants (4)
Artifacts (4)
Enchantments (4)
Lands (20)
Sideboard (15)
Main deck (60)
Creatures (28)
- 3 Harbinger of the Tides
- 4 Lord of Atlantis
- 4 Master of the Pearl Trident
- 2 Merfolk Trickster
- 4 Silvergill Adept
- 3 Svyelun of Sea and Sky
- 4 Tide Shaper
- 4 Vodalian Hexcatcher
Instants (4)
Artifacts (4)
Enchantments (4)
Lands (20)
- 4 Fiery Islet
- 2 Island
- 4 Mutavault
- 4 Scalding Tarn
- 4 Spirebluff Canal
- 2 Steam Vents
Sideboard (15)
Compared with the average Merfolk list
Average of 3 decks in the 7 days up to Sept. 16, 2023, the day of this tournament.
Main deck
More than usual
- +3 Fiery Islet (4 vs 1.3)
- +3 Flame of Anor (4 vs 1.3)
- +3 Scalding Tarn (4 vs 1.3)
- +3 Spirebluff Canal (4 vs 1.3)
- +3 Spreading Seas (4 vs 1.3)
- +1 Silvergill Adept (4 vs 2.7)
- +1 Steam Vents (2 vs 0.7)
- +1 Harbinger of the Tides (3 vs 1.7)
Fewer than usual
- -4 Island (2 vs 6.0)
- -2 Cavern of Souls (0 vs 2.3)
- -2 Force of Negation (0 vs 2.3)
- -1 Merfolk Trickster (2 vs 3.3)
- -1 Merrow Reejerey (0 vs 1.3)
- -1 Mistcaller (0 vs 1.3)
- -1 Glasspool Mimic (0 vs 1.0)
- -1 Otawara, Soaring City (0 vs 1.0)
Sideboard
More than usual
- +3 Alpine Moon (4 vs 1.3)
- +2 Lightning Bolt (3 vs 1.0)
- +2 Pithing Needle (3 vs 1.0)
- +1 Tidebinder Mage (2 vs 0.7)
- +1 Relic of Progenitus (3 vs 1.7)
Fewer than usual
- -2 Subtlety (0 vs 2.3)
- -2 Chalice of the Void (0 vs 2.0)
- -1 Kira, Great Glass-Spinner (0 vs 1.0)
- -1 Steel Sabotage (0 vs 1.0)
- -1 Stern Scolding (0 vs 1.0)
This is the most unusual list of the archetype in this period: 18 cards away from the average.