Most played cards in Freshmaker:

4 Decks
Birds of Paradise
16 copies - 4 average
Eternal Witness
16 copies - 4 average
Magma Jet
15 copies - 3.75 average
Sakura-Tribe Elder
14 copies - 3.5 average
Sowing Salt
14 copies - 3.5 average
Troll Ascetic
12 copies - 3 average
Naturalize
12 copies - 3 average
Sword of Fire and Ice
11 copies - 2.75 average
Boil
10 copies - 2.5 average
Pyroclasm
10 copies - 2.5 average
Arc-Slogger
7 copies - 1.75 average
7 copies - 1.75 average
Plow Under
7 copies - 1.75 average
Cranial Extraction
6 copies - 1.5 average
Viridian Zealot
6 copies - 1.5 average
Viridian Shaman
6 copies - 1.5 average
Solemn Simulacrum
4 copies - 1 average
Sensei's Divining Top
4 copies - 1 average
Aether Vial
4 copies - 1 average
Umezawa's Jitte
4 copies - 1 average