Giovanni's Nidoking is a Rare Holo Pokémon — Stage 2 card from Pokémon TCG (Gym Challenge, GYM2).
Rare Holo
Gym Challenge (GYM2)
Card Text
Intimidate: If the Defending Pokémon's maximum HP is 50 or less, it can't attack Giovanni's Nidoking during your opponent's next turn. (Benching or evolving either Pokémon ends this effect.)
Tumbling Attack: Flip a coin. If heads, this attack does 40 damage plus 30 more damage; if tails, this attack does 40 damage.