12 cards where the card types include “gremlin”

Blisterspit Gremlin (Ikoria: Lair of Behemoths #108)
Brazen Scourge (Ultimate Masters #125)
Flensermite (Mirrodin Besieged #41)
Furnace Gremlin (March of the Machine #139)
Gimbal, Gremlin Prodigy (March of the Machine Commander #3)
Phyrexian Gremlins (Antiquities #18)
Ravenous Intruder (Double Masters #141)
Ruinous Gremlin (Kaladesh #128)
Salivating Gremlins (Double Masters #143)
Territorial Gorger (Kaladesh #136)
Terror of the Fairgrounds (Kaladesh #137)
Thriving Grubs (Kaladesh #138)

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