Most played cards in Reamimator:

1 Decks
Through the Breach
4 copies - 4 average
Worldspine Wurm
4 copies - 4 average
Griselbrand
4 copies - 4 average
Bloodstained Mire
4 copies - 4 average
Faithless Looting
4 copies - 4 average
Nourishing Shoal
4 copies - 4 average
Goryo's Vengeance
4 copies - 4 average
Simian Spirit Guide
4 copies - 4 average
Serum Visions
4 copies - 4 average
Polluted Delta
4 copies - 4 average
Echoing Truth
3 copies - 3 average
Blackcleave Cliffs
3 copies - 3 average
Pyroclasm
3 copies - 3 average
Pact of Negation
2 copies - 2 average
Izzet Charm
2 copies - 2 average
Surgical Extraction
2 copies - 2 average
Dispel
2 copies - 2 average
Desperate Ritual
2 copies - 2 average
Collective Brutality
2 copies - 2 average
Borborygmos Enraged
2 copies - 2 average