Merfolk 
Main deck (60)
Creatures (30)
Instants (2)
Artifacts (5)
Enchantments (4)
Lands (19)
Sideboard (14)
Main deck (60)
Creatures (30)
- 4 Cursecatcher
- 4 Harbinger of the Tides
- 4 Lord of Atlantis
- 4 Master of the Pearl Trident
- 4 Master of Waves
- 3 Merrow Reejerey
- 3 Phantasmal Image
- 4 Silvergill Adept
Instants (2)
Artifacts (5)
Enchantments (4)
Lands (19)
Sideboard (14)
Compared with the average Merfolk list
Average of 4 decks in the 7 days up to Jan. 26, 2018, the day of this tournament.
Main deck
More than usual
- +9 Island (15 vs 6.3)
- +2 Master of Waves (4 vs 2.0)
- +2 Phantasmal Image (3 vs 1.0)
- +2 Spell Pierce (2 vs 0.5)
- +1 Harbinger of the Tides (4 vs 2.8)
Fewer than usual
- -2 Botanical Sanctum (0 vs 2.0)
- -2 Kumena's Speaker (0 vs 2.0)
- -2 Merfolk Mistbinder (0 vs 2.0)
- -2 Flooded Strand (0 vs 1.5)
- -1 Cavern of Souls (0 vs 1.3)
- -1 Dismember (0 vs 1.3)
- -1 Scalding Tarn (0 vs 1.3)
- -1 Breeding Pool (0 vs 1.0)
Sideboard
More than usual
- +2 Vapor Snag (3 vs 0.8)
- +2 Kira, Great Glass-Spinner (2 vs 0.5)
- +2 Sea's Claim (2 vs 0.5)
Fewer than usual
- -2 Natural State (0 vs 1.8)
- -1 Negate (0 vs 1.3)
- -1 Relic of Progenitus (2 vs 3.0)
This is the most unusual list of the archetype in this period: 16 cards away from the average.