Most played cards in Ponza:

4 Decks
Sinkhole
16 copies - 4 average
Ice Storm
16 copies - 4 average
Bayou
16 copies - 4 average
Crumble
15 copies - 3.75 average
Mishra's Factory
14 copies - 3.5 average
Taiga
12 copies - 3 average
Badlands
12 copies - 3 average
Paralyze
12 copies - 3 average
Stone Rain
12 copies - 3 average
Nevinyrral's Disk
10 copies - 2.5 average
City of Brass
8 copies - 2 average
Juzam Djinn
7 copies - 1.75 average
Flashfires
6 copies - 1.5 average
Sedge Troll
6 copies - 1.5 average
Gloom
6 copies - 1.5 average
Maze of Ith
6 copies - 1.5 average
Tsunami
5 copies - 1.25 average
Red Elemental Blast
5 copies - 1.25 average
Erhnam Djinn
5 copies - 1.25 average
Whirling Dervish
5 copies - 1.25 average