Most played cards in Grixis Cat Pact:

1 Decks
Smoldering Marsh
4 copies - 4 average
Shivan Reef
4 copies - 4 average
Dark Petition
4 copies - 4 average
Demonic Pact
4 copies - 4 average
Oath of Chandra
4 copies - 4 average
Languish
4 copies - 4 average
Oath of Jace
3 copies - 3 average
Sunken Hollow
3 copies - 3 average
Negate
3 copies - 3 average
Choked Estuary
3 copies - 3 average
Anticipate
3 copies - 3 average
Radiant Flames
3 copies - 3 average
Harmless Offering
3 copies - 3 average
Dispel
2 copies - 2 average
Disperse
2 copies - 2 average
Transgress the Mind
2 copies - 2 average
Clash of Wills
2 copies - 2 average
Liliana, the Last Hope
2 copies - 2 average
Foreboding Ruins
2 copies - 2 average
Evolving Wilds
2 copies - 2 average