Most played cards in Replenish:

2 Decks
Flooded Strand
8 copies - 4 average
Replenish
8 copies - 4 average
Chill
8 copies - 4 average
Ancient Tomb
8 copies - 4 average
Swords to Plowshares
8 copies - 4 average
Adarkar Wastes
8 copies - 4 average
Opalescence
8 copies - 4 average
Parallax Wave
8 copies - 4 average
Parallax Tide
8 copies - 4 average
Frantic Search
8 copies - 4 average
Attunement
8 copies - 4 average
Seal of Cleansing
7 copies - 3.5 average
Arcane Denial
5 copies - 2.5 average
Intuition
5 copies - 2.5 average
Defense Grid
4 copies - 2 average
Careful Study
4 copies - 2 average
Coastal Tower
3 copies - 1.5 average
Fact or Fiction
3 copies - 1.5 average
Stifle
3 copies - 1.5 average
Seal of Removal
2 copies - 1 average