Most played cards in Melforks:

2 Decks
Force of Will
28 copies - 14 average
Aether Vial
8 copies - 4 average
Wasteland
8 copies - 4 average
Tide Shaper
8 copies - 4 average
Master of the Pearl Trident
8 copies - 4 average
Lord of Atlantis
8 copies - 4 average
Vodalian Hexcatcher
8 copies - 4 average
Cavern of Souls
8 copies - 4 average
True-Name Nemesis
7 copies - 3.5 average
Chalice of the Void
6 copies - 3 average
Force of Negation
6 copies - 3 average
Silvergill Adept
5 copies - 2.5 average
Daze
4 copies - 2 average
Dismember
4 copies - 2 average
Merfolk Trickster
4 copies - 2 average
Hullbreacher
3 copies - 1.5 average
Subtlety
3 copies - 1.5 average
Brazen Borrower
2 copies - 1 average
Faerie Macabre
2 copies - 1 average
Otawara, Soaring City
2 copies - 1 average