Merfolk 
Main deck (60)
Creatures (33)
Artifacts (8)
Lands (19)
Sideboard (15)
Main deck (60)
Creatures (33)
- 2 Glasspool Mimic // Glasspool Shore
- 4 Lord of Atlantis
- 4 Master of the Pearl Trident
- 4 Master of Waves
- 3 Merfolk Trickster
- 4 Merrow Reejerey
- 4 Silvergill Adept
- 4 Svyelun of Sea and Sky
- 4 Tide Shaper
Artifacts (8)
Lands (19)
Sideboard (15)
Compared with the average Merfolk list
Average of 56 decks in the 30 days up to June 22, 2021, the day of this tournament.
Main deck
More than usual
- +4 Chalice of the Void (4 vs 0.4)
- +4 Master of Waves (4 vs 0.5)
- +1 Island (10 vs 8.5)
- +1 Merrow Reejerey (4 vs 2.6)
- +1 Glasspool Mimic (2 vs 0.7)
Fewer than usual
- -3 Force of Negation (0 vs 2.6)
- -2 Spreading Seas (0 vs 2.3)
- -2 Cursecatcher (0 vs 1.7)
Sideboard
More than usual
- +3 Cursed Totem (3 vs 0.5)
- +2 Tidebinder Mage (4 vs 1.6)
- +1 Grafdigger's Cage (2 vs 0.7)
Fewer than usual
- -1 Dismember (0 vs 1.5)
- -1 Harbinger of the Tides (0 vs 1.0)
Most unusual list in this period: Bishark in Modern Preliminary (31 cards away from the average)