Thundershock
Cost: Lightning (10)
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
Fly
Cost: Colorless, Colorless, Colorless (30)
Flip a coin. If heads, during your opponent's next turn, prevent all effects of attacks, including damage, done to Flying Pikachu; if tails, this attack does nothing (not even damage).
By learning how to fly, Pikachu overcame its weakness to Fighting Pokémon.