Most played cards in Hammertime:

1 Decks
Snow-Covered Plains
7 copies – 7 avg
Esper Sentinel
4 copies – 4 avg
Colossus Hammer
4 copies – 4 avg
Sigarda's Aid
4 copies – 4 avg
Urza's Saga
4 copies – 4 avg
Mox Opal
4 copies – 4 avg
Stoneforge Mystic
4 copies – 4 avg
Steelshaper's Gift
4 copies – 4 avg
Puresteel Paladin
4 copies – 4 avg
Ornithopter
4 copies – 4 avg
Ancient Den
4 copies – 4 avg
Mana Tithe
3 copies – 3 avg
Inkmoth Nexus
3 copies – 3 avg
Ethersworn Canonist
3 copies – 3 avg
Deafening Silence
2 copies – 2 avg
Containment Priest
2 copies – 2 avg
Karakas
2 copies – 2 avg
Swords to Plowshares
2 copies – 2 avg
Lion Sash
1 copies – 1 avg
Sword of Fire and Ice
1 copies – 1 avg