Most played cards in Puresteel Combo:

1 Decks
Cathar's Shield
4 copies - 4 average
Accorder's Shield
4 copies - 4 average
Mox Opal
4 copies - 4 average
Paradise Mantle
4 copies - 4 average
Puresteel Paladin
4 copies - 4 average
Spidersilk Net
4 copies - 4 average
Leyline of Sanctity
4 copies - 4 average
Serum Visions
4 copies - 4 average
Retract
4 copies - 4 average
Sram, Senior Edificer
4 copies - 4 average
Marsh Flats
4 copies - 4 average
Windswept Heath
3 copies - 3 average
Bastion Inventor
3 copies - 3 average
Echoing Truth
3 copies - 3 average
Silence
3 copies - 3 average
Paradoxical Outcome
2 copies - 2 average
Seachrome Coast
2 copies - 2 average
Sigil of Distinction
2 copies - 2 average
Swan Song
2 copies - 2 average
Noxious Revival
2 copies - 2 average