Most played cards in Swans:

3 Decks
Flame Javelin
12 copies - 4 average
Volcanic Fallout
12 copies - 4 average
Lightning Bolt
12 copies - 4 average
Reflecting Pool
12 copies - 4 average
Swans of Bryn Argoll
11 copies - 3.67 average
Kitchen Finks
8 copies - 2.67 average
Rugged Prairie
8 copies - 2.67 average
Mutavault
8 copies - 2.67 average
Banefire
8 copies - 2.67 average
Ajani Vengeant
8 copies - 2.67 average
Intimidation Bolt
8 copies - 2.67 average
Hallowed Burial
8 copies - 2.67 average
Jungle Shrine
8 copies - 2.67 average
Pyroclasm
7 copies - 2.33 average
Runed Halo
6 copies - 2 average
Cryptic Command
4 copies - 1.33 average
Negate
4 copies - 1.33 average
Cascade Bluffs
4 copies - 1.33 average
Vivid Creek
4 copies - 1.33 average
Manabarbs
4 copies - 1.33 average