Most played cards in Soul Sisters:

5 Decks
Ranger of Eos
20 copies - 4 average
Serra Ascendant
20 copies - 4 average
Soul's Attendant
20 copies - 4 average
Tectonic Edge
20 copies - 4 average
Soul Warden
20 copies - 4 average
Survival Cache
20 copies - 4 average
Ajani's Pridemate
20 copies - 4 average
Kabira Crossroads
20 copies - 4 average
Brave the Elements
19 copies - 3.8 average
Kor Firewalker
18 copies - 3.6 average
Path to Exile
15 copies - 3 average
Oblivion Ring
12 copies - 2.4 average
Luminarch Ascension
11 copies - 2.2 average
Linvala, Keeper of Silence
10 copies - 2 average
10 copies - 2 average
War Priest of Thune
9 copies - 1.8 average
Celestial Purge
8 copies - 1.6 average
Elspeth, Knight-Errant
7 copies - 1.4 average
Rest for the Weary
6 copies - 1.2 average
Sun Titan
5 copies - 1 average