11 cards where the name includes “flash”

Aether Flash (Seventh Edition #172)
Annie Flash, the Veteran (Outlaws of Thunder Junction #190)
Flash (Masters 25 #57)
Flash Conscription (Ravnica: City of Guilds #124)
Flash Counter (Eighth Edition #78)
Flashfires (Ninth Edition #183)
Flash Flood (Masters Edition III #35)
Flash Foliage (Dissension #85)
Flashfreeze (Modern Masters 2015 #45)
Flash of Defiance (Torment #99)
Flash of Insight (Judgment #40)

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