Most played cards in Tainted Pact Combo:

2 Decks
Tainted Pact
4 copies - 2 average
Thassa's Oracle
4 copies - 2 average
Force of Negation
3 copies - 1.5 average
Daze
2 copies - 1 average
Muddle the Mixture
2 copies - 1 average
Night's Whisper
2 copies - 1 average
Ponder
2 copies - 1 average
Portent
2 copies - 1 average
Inquisition of Kozilek
2 copies - 1 average
Force of Will
2 copies - 1 average
Duress
2 copies - 1 average
Fatal Push
2 copies - 1 average
Flusterstorm
2 copies - 1 average
Bloodstained Mire
2 copies - 1 average
Drown in the Loch
2 copies - 1 average
Profane Tutor
2 copies - 1 average
Nihil Spellbomb
2 copies - 1 average
Energy Flux
2 copies - 1 average
Sudden Edict
2 copies - 1 average
Surgical Extraction
2 copies - 1 average