30 cards where the text includes “flash” and the set is “tsp”

Aether Web (Time Spiral #189)
Ancient Grudge (Time Spiral #143)
Ashcoat Bear (Time Spiral #190)
Bogardan Hellkite (Time Spiral #147)
Bogardan Rager (Time Spiral #148)
Celestial Crusader (Time Spiral #7)
Conflagrate (Time Spiral #151)
Crookclaw Transmuter (Time Spiral #55)
Draining Whelk (Time Spiral #57)
Dralnu, Lich Lord (Time Spiral #237)
Dread Return (Time Spiral #104)
Drudge Reavers (Time Spiral #105)
Feebleness (Time Spiral #110)
Foriysian Interceptor (Time Spiral #18)
Gaze of Justice (Time Spiral #20)
Ghitu Firebreathing (Time Spiral #158)
Havenwood Wurm (Time Spiral #199)
Momentary Blink (Time Spiral #29)
Mystical Teachings (Time Spiral #69)
Ophidian Eye (Time Spiral #70)
Plated Pegasus (Time Spiral #34)
Scryb Ranger (Time Spiral #215)
Strangling Soot (Time Spiral #132)
Teferi, Mage of Zhalfir (Time Spiral #83)
Temporal Isolation (Time Spiral #43)
Think Twice (Time Spiral #86)
Thrill of the Hunt (Time Spiral #229)
Traitor's Clutch (Time Spiral #137)
Viashino Bladescout (Time Spiral #185)
Voidmage Husher (Time Spiral #92)

It is the moment of discovery, the triumph of the mind, and the end of these results.