Most played cards in Infect:

2 Decks
Invigorate
8 copies - 4 average
Force of Will
8 copies - 4 average
Inkmoth Nexus
8 copies - 4 average
Misty Rainforest
8 copies - 4 average
Blighted Agent
8 copies - 4 average
Brainstorm
8 copies - 4 average
Tropical Island
8 copies - 4 average
Glistener Elf
8 copies - 4 average
Noble Hierarch
8 copies - 4 average
Verdant Catacombs
7 copies - 3.5 average
Daze
7 copies - 3.5 average
Vines of Vastwood
5 copies - 2.5 average
Ponder
5 copies - 2.5 average
Crop Rotation
4 copies - 2 average
Force of Vigor
4 copies - 2 average
Spell Pierce
4 copies - 2 average
Berserk
4 copies - 2 average
Veil of Summer
3 copies - 1.5 average
Spellskite
3 copies - 1.5 average
Blue Elemental Blast
2 copies - 1 average