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 77 decks in the 90 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)
- +3 Master of Waves (4 vs 0.6)
- +2 Island (10 vs 7.6)
- +2 Merrow Reejerey (4 vs 2.0)
- +2 Svyelun of Sea and Sky (4 vs 2.3)
- +1 Glasspool Mimic (2 vs 0.5)
- +1 Tide Shaper (4 vs 2.5)
Fewer than usual
- -3 Spreading Seas (0 vs 2.6)
- -3 Force of Negation (0 vs 2.5)
- -1 Cursecatcher (0 vs 1.5)
Sideboard
More than usual
- +3 Tidebinder Mage (4 vs 1.2)
- +3 Cursed Totem (3 vs 0.4)
- +1 Grafdigger's Cage (2 vs 0.5)
- +1 Counterspell (3 vs 1.7)
Fewer than usual
- -1 Dismember (0 vs 1.5)
- -1 Chalice of the Void (0 vs 1.2)
Most unusual list in this period: Bishark in Modern Preliminary (29 cards away from the average)