Most played cards in Martyr Proc:

3 Decks
Snow-Covered Plains
23 copies - 7.67 average
Path to Exile
12 copies - 4 average
Ghost Quarter
11 copies - 3.67 average
Serra Ascendant
11 copies - 3.67 average
Ranger-Captain of Eos
11 copies - 3.67 average
Martyr of Sands
10 copies - 3.33 average
Squadron Hawk
8 copies - 2.67 average
Field of Ruin
8 copies - 2.67 average
Flagstones of Trokair
7 copies - 2.33 average
Heliod, Sun-Crowned
6 copies - 2 average
Damping Sphere
5 copies - 1.67 average
Rest in Peace
5 copies - 1.67 average
Ranger of Eos
5 copies - 1.67 average
Castle Ardenvale
4 copies - 1.33 average
Soul Warden
4 copies - 1.33 average
Solitude
4 copies - 1.33 average
Abiding Grace
4 copies - 1.33 average
Stoneforge Mystic
4 copies - 1.33 average
Force of Virtue
4 copies - 1.33 average
Void Mirror
4 copies - 1.33 average