8 cards where the illustration contains “key-art-tournamen...”

Cabal Patriarch (Odyssey #120)
Empyrial Plate (Mirrodin #168)
Firemane Angel (Ravnica: City of Guilds #205)
Ivory Charm (Mirage #23)
Lightning Dragon (Urza's Saga Promos #202)
Rathi Dragon (Tempest #196)
Samurai of the Pale Curtain (Champions of Kamigawa #43)
Tidal Kraken (Mercadian Masques #110)

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