Most played cards in Tainted Pact Combo:

3 Decks
Tainted Pact
6 copies - 2 average
Thassa's Oracle
6 copies - 2 average
Energy Flux
4 copies - 1.33 average
Force of Negation
4 copies - 1.33 average
Thought Lash
4 copies - 1.33 average
Flusterstorm
3 copies - 1 average
Inquisition of Kozilek
3 copies - 1 average
Fatal Push
3 copies - 1 average
Daze
3 copies - 1 average
Cabal Therapy
3 copies - 1 average
Nihil Spellbomb
3 copies - 1 average
Muddle the Mixture
3 copies - 1 average
Drown in the Loch
3 copies - 1 average
Duress
3 copies - 1 average
Narset, Parter of Veils
3 copies - 1 average
Spell Pierce
3 copies - 1 average
Step Through
3 copies - 1 average
Thoughtseize
3 copies - 1 average
Unearth
3 copies - 1 average
Bloodstained Mire
3 copies - 1 average