Most played cards in DreadStalker:

4 Decks
Daze
16 copies - 4 average
Phyrexian Dreadnought
16 copies - 4 average
Polluted Delta
16 copies - 4 average
Brainstorm
16 copies - 4 average
Stifle
16 copies - 4 average
Force of Will
16 copies - 4 average
Wasteland
15 copies - 3.75 average
Underground Sea
13 copies - 3.25 average
Tombstalker
12 copies - 3 average
Engineered Explosives
10 copies - 2.5 average
Sensei's Divining Top
9 copies - 2.25 average
Thoughtseize
8 copies - 2 average
Vision Charm
8 copies - 2 average
8 copies - 2 average
Dark Confidant
7 copies - 1.75 average
Extirpate
7 copies - 1.75 average
Blue Elemental Blast
5 copies - 1.25 average
Ponder
5 copies - 1.25 average
Flooded Strand
5 copies - 1.25 average
Engineered Plague
5 copies - 1.25 average