Your search for "Voltorb - 028/092" revealed the following:
Voltorb (Japanese) - 028/069 - Common from S6a: Eevee Heroes, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Tomokazu Komiya Card Text:[Colorless] Single Shot Blast (30)Flip a coin. If tails, this attack does nothing.
Voltorb (Japanese) - 029/096 - Common from S2: Rebellion Crash, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Hasegawa Saki Card Text:[Colorless] Continuous Tumble (20x)Flip a coin until you get tails. This attack does 20 damage for each...