21 cards where (the text includes “fish” or the text includes “shark” or the text includes “changeling”) and the text includes “token”

Beza, the Bounding Spring (Bloomburrow #2)
Birthing Boughs (Modern Horizons #221)
Black Market Connections (The Lost Caverns of Ixalan Commander #181)
Crib Swap (Commander Legends: Battle for Baldur's Gate #690)
Exotic Pets (Streets of New Capenna #185)
Expendable Lackey (Streets of New Capenna #43)
Fisher's Talent (Bloomburrow Commander #36)
Formless Genesis (Duskmourn: House of Horror Commander #34)
Fountainport (Bloomburrow #253)
Frost Fair Lure Fish (Doctor Who #129)
Irregular Cohort (Commander Legends: Battle for Baldur's Gate #696)
Knightfisher (Bloomburrow #55)
Maskwood Nexus (Commander Legends: Battle for Baldur's Gate #865)
Orvar, the All-Form (Kaldheim #70)
Parting Gust (Bloomburrow #24)
Reef Worm (Modern Horizons 3 #271)
Reservoir Kraken (Streets of New Capenna #56)
Shark Typhoon (Duskmourn: House of Horror Commander #127)
Sleep with the Fishes (Streets of New Capenna #61)
Spiny Starfish (Masters Edition III #50)
The Bears of Littjara (Kaldheim #205)

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