12 cards where the illustration contains “boiler”

Beamsplitter Mage (Guilds of Ravnica #155)
Epic Experiment (Return to Ravnica #159)
Gelectrode (Guildpact #113)
Gruul Spellbreaker (Ravnica Allegiance #179)
Hard Hat Area (Unstable #187)
Island (GRN Guild Kit #48)
Izzet Boilerworks (Guildpact #159)
Mishra's Workshop (Antiquities #81)
Ral, Izzet Viceroy (Mythic Edition #GR5)
Runaway Steam-Kin (Guilds of Ravnica #115)
Urza's Power Plant (Chronicles #115d)
Urza's Power Plant (Antiquities #84d)

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