Your search for "Blitzle 12/30" revealed the following:
Blitzle - 6/12 - McDonald's Holo - Promo from McDonald's Collection 2011, available at 401 Games Canada. Rarity: Promo Finish: Holofoil Artist: Ken Sugimori Card Text:[1L] Quick Attack (10+)Flip a coin. If heads, this attack does 20 more damage.