15 cards where the text includes “transmute”

Brainspoil (Ravnica: City of Guilds #78)
Clutch of the Undercity (Ravnica: City of Guilds #197)
Crookclaw Transmuter (Time Spiral Remastered #59)
Dimir House Guard (Ravnica Remastered #73)
Dimir Infiltrator (Planechase Anthology #86)
Dimir Machinations (Ravnica: City of Guilds #84)
Dizzy Spell (Ravnica: City of Guilds #43)
Drift of Phantasms (Ravnica Remastered #42)
Ethereal Usher (Ravnica: City of Guilds #47)
Grozoth (Ravnica: City of Guilds #53)
Muddle the Mixture (Ravnica Remastered #50)
Netherborn Phalanx (Ravnica: City of Guilds #99)
Perplex (Ravnica: City of Guilds #217)
Shred Memory (Ravnica: City of Guilds #105)
Tolaria West (Time Spiral Remastered #286)

The message was clear to Sorin—time to search for something else.