Most played cards in Vampires:

1 Decks
Doom Blade
4 copies - 4 average
Duress
4 copies - 4 average
Tendrils of Corruption
4 copies - 4 average
Vampire Hexmage
4 copies - 4 average
Child of Night
4 copies - 4 average
Smother
4 copies - 4 average
Disentomb
3 copies - 3 average
Vampire Nighthawk
3 copies - 3 average
Sadistic Sacrament
3 copies - 3 average
Gatekeeper of Malakir
3 copies - 3 average
Diabolic Tutor
3 copies - 3 average
Damnation
2 copies - 2 average
Rise from the Grave
2 copies - 2 average
Kalastria Highborn
2 copies - 2 average
Vampire Aristocrat
2 copies - 2 average
Vampire's Bite
1 copies - 1 average
Vampire Nocturnus
1 copies - 1 average
Piranha Marsh
1 copies - 1 average
Butcher of Malakir
1 copies - 1 average
Ascendant Evincar
1 copies - 1 average