A Basic Pokemon Card of type Water with the title Giovanni's Magikarp and 30 HP of rarity Common from the set Gym Challenge.  It has the attack Ancestral Memory with the cost Water, the energy cost 1 and the damage of 40 with the description: Flip a coin. If tails, this attack does nothing. Either way, you can't use this attack again as long as Giovanni's Magikarp stays in play (even putting Giovanni's Magikarp on the Bench won't let you use it again). It has the attack Flail Around with the cost Water, Colorless, the energy cost 2 and the damage of 10 with the description: Flip 3 coins. This attack does 10 damage times the number of heads. It has weakness against Lightning 2. 
Giovanni's Magikarp