40 cards where the illustration contains “metathran”

Allied Strategies (Planeshift #20)
Angelic Shield (Invasion #228)
Chaotic Strike (Invasion #140)
Chromatic Sphere (Invasion #299)
Daring Leap (Planeshift #101)
Dead Ringers (Apocalypse #37)
Dwarven Patrol (Apocalypse #61)
Exotic Disease (Planeshift #43)
Foul Presence (Apocalypse #39)
Halam Djinn (Invasion #146)
Hooded Kavu (Invasion #147)
Ice Cave (Apocalypse #24)
Illuminated Wings (Urza's Destiny #34)
Kavu Scout (Invasion #151)
Last Stand (Apocalypse #107)
Living Airship (Apocalypse #28)
Lobotomy (Invasion #255)
Metathran Aerostat (Invasion #61)
Metathran Elite (Urza's Destiny #38)
Metathran Soldier (Urza's Destiny #39)
Metathran Transport (Invasion #62)
Metathran Zombie (Invasion #63)
Minotaur Tactician (Apocalypse #65)
Nightscape Familiar (Planeshift #48)
Phyrexian Altar (Invasion #306)
Phyrexian Lens (Invasion #307)
Phyrexian Rager (Media Inserts #14)
Powerstone Minefield (Apocalypse #115)
Probe (Invasion #66)
Prohibit (Invasion #67)
Shriek of Dread (Planeshift #53)
Sigil of Sleep (Urza's Destiny #46)
Sky Weaver (Invasion #74)
Spirit of Resistance (Invasion #38)
Spirit Weaver (Invasion #39)
Spite // Malice (Invasion #293)
Stormscape Battlemage (Planeshift #35)
Sway of Illusion (Invasion #77)
Urza's Incubator (Urza's Destiny #142)
Wings of Hope (Invasion #289)

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