A Stage 2 Pokemon Card of type Colorless with the title Nidoking and 100 HP of rarity Rare Secret evolved from Nidorino from the set Aquapolis.  It has the attack Poison Horn with the cost Grass, Grass, Colorless, the energy cost 3 and the damage of 20 with the description: The Defending Pokemon is now Poisoned. It has the attack Rolling Thunder with the cost Lightning, Lightning, Fighting, Fighting, the energy cost 4 and the damage of 50 with the description: Flip a coin, If heads, this attack does 10 damage to each of your opponent's Benched Pokemon. If tails, this attack does 10 damage to each of your Benched Pokemon. (Don't apply Weakness or Resistance for Benched Pokemon.) It has the ability Crystal Type with the description: Whenever you attach a Grass, Lightning, or Fire basic Energy card from your hand to Nidoking, Nidoking's type (color) becomes the same as that Energy card type until the end of the turn. It has weakness against Grass 2. 
Nidoking