Most played cards in Dimir:

4 Decks
Counterspell
16 copies - 4 average
Dismal Backwater
16 copies - 4 average
Preordain
16 copies - 4 average
Augur of Bolas
16 copies - 4 average
Chainer's Edict
14 copies - 3.5 average
Doom Blade
12 copies - 3 average
Disfigure
11 copies - 2.75 average
Duress
10 copies - 2.5 average
Dimir Aqueduct
10 copies - 2.5 average
Mulldrifter
10 copies - 2.5 average
Evincar's Justice
9 copies - 2.25 average
Gurmag Angler
8 copies - 2 average
Radiant Fountain
7 copies - 1.75 average
Exclude
7 copies - 1.75 average
Dispel
7 copies - 1.75 average
Forbidden Alchemy
6 copies - 1.5 average
Zombie Outlander
6 copies - 1.5 average
Hydroblast
5 copies - 1.25 average
Dimir Guildgate
5 copies - 1.25 average
Echoing Decay
5 copies - 1.25 average