Most played cards in 5c Goodstuff:

3 Decks
City of Brass
12 copies - 4 average
Swords to Plowshares
12 copies - 4 average
Disenchant
11 copies - 3.67 average
Lightning Bolt
8 copies - 2.67 average
Counterspell
7 copies - 2.33 average
Divine Offering
7 copies - 2.33 average
Tundra
7 copies - 2.33 average
Red Elemental Blast
6 copies - 2 average
Volcanic Island
6 copies - 2 average
Mishra's Factory
6 copies - 2 average
Blue Elemental Blast
6 copies - 2 average
Sylvan Library
5 copies - 1.67 average
Hypnotic Specter
4 copies - 1.33 average
Scrubland
4 copies - 1.33 average
Badlands
4 copies - 1.33 average
Serendib Efreet
4 copies - 1.33 average
Chain Lightning
4 copies - 1.33 average
Hymn to Tourach
4 copies - 1.33 average
Order of the Ebon Hand
4 copies - 1.33 average
Sedge Troll
4 copies - 1.33 average