Merfolk 
Main deck (60)
Creatures (24)
Instants (2)
Sorceries (2)
Artifacts (8)
Enchantments (4)
Lands (20)
Sideboard (15)
Main deck (60)
Creatures (24)
- 4 Coralhelm Commander
- 4 Harbinger of the Tides
- 4 Kira, Great Glass-Spinner
- 4 Lord of Atlantis
- 4 Master of the Pearl Trident
- 4 Silvergill Adept
Instants (2)
- 2 Abrade
Sorceries (2)
- 2 Roast
Artifacts (8)
Enchantments (4)
Lands (20)
Sideboard (15)
Compared with the average Merfolk list
Average of 43 decks in the 30 days up to April 13, 2018, the day of this tournament.
Main deck
More than usual
- +3 Chalice of the Void (4 vs 0.5)
- +3 Coralhelm Commander (4 vs 0.7)
- +3 Kira, Great Glass-Spinner (4 vs 1.1)
- +3 Spirebluff Canal (3 vs 0.4)
- +2 Abrade (2 vs 0.1)
- +2 Roast (2 vs 0.1)
- +2 Polluted Delta (2 vs 0.3)
- +2 Steam Vents (2 vs 0.3)
Fewer than usual
- -5 Island (6 vs 10.5)
- -3 Cursecatcher (0 vs 3.2)
- -3 Merrow Reejerey (0 vs 2.8)
- -3 Master of Waves (0 vs 2.7)
- -1 Cavern of Souls (0 vs 1.2)
- -1 Spell Pierce (0 vs 1.1)
Sideboard
More than usual
- +4 Mana Leak (4 vs 0.4)
- +2 Blood Moon (2 vs 0.2)
- +2 Tidebinder Mage (3 vs 1.2)
- +1 Echoing Truth (2 vs 0.8)
Fewer than usual
- -2 Ceremonious Rejection (0 vs 2.3)
- -2 Negate (0 vs 1.8)
- -1 Relic of Progenitus (2 vs 3.2)
Most unusual list in this period: gygax in Modern League (5-0) (22 cards away from the average)