Voltorb

Fastball: Choose 1 of your opponent's Pokémon.  Flip a coin.  If heads, this attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Charge Beam (10): Search your discard pile for a lightning Energy card and attach it to Voltorb.

Thundershock (20): Flip a coin.  If heads, the Defending Pokémon is now Paralyzed.