30 cards where (the text includes “exchange” and the text includes “control”)

Avarice Totem (5DN)
Chromeshell Crab (C19)
Confusion in the Ranks (MRD)
Conjured Currency (RTR)
Cultural Exchange (ODY)
Daring Thief (JOU)
Djinn of Infinite Deceits (CMA)
Everythingamajig (UST)
Eyes Everywhere (RNA)
Gauntlets of Chaos (ME3)
Gilded Drake (USG)
Juxtapose (ME1)
Legerdemain (TPR)
Mirror Mirror (UGL)
Modify Memory (CLB)
Oko, Thief of Crowns (ELD)
Perplexing Chimera (BNG)
Phyrexian Infiltrator (INV)
Political Trickery (MIR)
Puca's Mischief (SHM)
Role Reversal (WAR)
Shifting Borders (SOK)
Shifting Loyalties (FRF)
Shrewd Negotiation (KLD)
Spawnbroker (RAV)
Sudden Substitution (C19)
Switcheroo (M19)
The Trickster-God's Heist (KHM)
Vedalken Plotter (CMD)
Visions of Duplicity (MIC)

It is the moment of discovery, the triumph of the mind, and the end of these results.