Most played cards in Merfolks:

1 Decks
 ↓ Cavern of Souls
4 copies – 4 avg
↓ Silvergill Adept
4 copies – 4 avg
↓ Chalice of the Void
4 copies – 4 avg
↓ Aether Vial
4 copies – 4 avg
↓ Paradigm Shift
4 copies – 4 avg
↓ True-Name Nemesis
4 copies – 4 avg
↓ Thassa's Oracle
4 copies – 4 avg
↓ Force of Will
4 copies – 4 avg
↓ Merfolk Trickster
4 copies – 4 avg
↓ Master of the Pearl Trident
4 copies – 4 avg
↓ Barrin, Tolarian Archmage
3 copies – 3 avg
↓ Waterlogged Grove
3 copies – 3 avg
↓ Chill
2 copies – 2 avg
↓ Relic of Progenitus
2 copies – 2 avg
↓ Grafdigger's Cage
2 copies – 2 avg
↓ Flusterstorm
2 copies – 2 avg
↓ Echoing Truth
2 copies – 2 avg
↓ Umezawa's Jitte
2 copies – 2 avg
↓ Back to Basics
2 copies – 2 avg
↓ Mutavault
2 copies – 2 avg