Most played cards in Bant Collected Company:

2 Decks
Reflector Mage
8 copies - 4 average
Dromoka's Command
8 copies - 4 average
Evolving Wilds
8 copies - 4 average
Prairie Stream
8 copies - 4 average
Spell Queller
8 copies - 4 average
Sylvan Advocate
8 copies - 4 average
Collected Company
8 copies - 4 average
Tireless Tracker
7 copies - 3.5 average
Selfless Spirit
7 copies - 3.5 average
Canopy Vista
6 copies - 3 average
Yavimaya Coast
6 copies - 3 average
Duskwatch Recruiter
6 copies - 3 average
Lumbering Falls
4 copies - 2 average
Tragic Arrogance
4 copies - 2 average
Tamiyo, Field Researcher
4 copies - 2 average
Declaration in Stone
4 copies - 2 average
Nissa, Vastwood Seer
4 copies - 2 average
Summary Dismissal
3 copies - 1.5 average
Thalia, Heretic Cathar
3 copies - 1.5 average
Ojutai's Command
3 copies - 1.5 average