Flip a coin. If heads, this attack does 30 damage plus 10 more damage; if tails, this attack does 30 damage and Nidoking does 10 damage to itself.
30+
Toxic
The Defending Pokémon is now Poisoned. It now takes 20 Poison damage instead of 10 after each player's turn (even if it was already Poisoned).
20
Illustrator: Ken Sugimori
Base Set 11/102 (Holographic)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
90
Type
Grass
Weakness
Psychic
Resistance
Retreat Cost
Level
48
Cost
Name
Effect
Power
Thrash
Flip a coin. If heads, this attack does 30 damage plus 10 more damage; if tails, this attack does 30 damage and Nidoking does 10 damage to itself.
30+
Toxic
The Defending Pokémon is now Poisoned. It now takes 20 Poison damage instead of 10 after each player's turn (even if it was already Poisoned).
20
Illustrator: Ken Sugimori
Base Set 2 11/130 (Holographic)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
90
Type
Grass
Weakness
Psychic
Resistance
Retreat Cost
Level
48
Cost
Name
Effect
Power
Thrash
Flip a coin. If heads, this attack does 30 damage plus 10 more damage; if tails, this attack does 30 damage and Nidoking does 10 damage to itself.
30+
Toxic
The Defending Pokémon is now Poisoned. It now takes 20 Poison damage instead of 10 after each player's turn (even if it was already Poisoned).
20
Illustrator: Ken Sugimori
Legendary Collection 31/110 (Rare)
GIOVANNI'S NIDOKING
Evolves from Giovanni's Nidorino (Stage 2)
Hit Points
120
Type
Grass
Weakness
Psychic
Resistance
Retreat Cost
Level
58
Cost
Name
Effect
Power
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.
40+
Illustrator: Ken Sugimori
Gym Challenge 7/132 (Holographic)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
110
Type
Fighting
Weakness
Grass
Resistance
Lightning
Retreat Cost
ID
C-71-#
Poké-POWER
Earth Rage: Once during your turn (before your attack), if Nidoking is your Active Pokémon, you may flip a coin. If heads, put a damage counter on each of your opponent's Benched Pokémon. This power can't be used if Nidoking is affected by a Special Condition.
Cost
Name
Effect
Power
Giant Horn
Flip a coin. If heads, this attack does 50 damage plus 30 more damage.
50
Illustrator: Naoyo Kimura
Aquapolis H18/H32 (Holographic)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
110
Type
Fighting
Weakness
Grass
Resistance
Lightning
Retreat Cost
ID
C-71-#
Poké-POWER
Earth Rage: Once during your turn (before your attack), if Nidoking is your Active Pokémon, you may Flip a coin. If heads, put a damage counter on each of your opponent's Benched Pokémon. This power can't be used if Nidoking is affected by a Special Condition.
Cost
Name
Effect
Power
Giant Horn
Flip a coin. If heads, this attack does 50 damage plus 30 more damage.
50
Illustrator: Naoyo Kimura
Aquapolis 24/147 (Rare)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
100
Type
Colorless
Weakness
Grass
Resistance
Retreat Cost
ID
D-72-#
Poké-BODY
Crystal Type: Whenever you attach a , , or 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.
Cost
Name
Effect
Power
Poison Horn
The Defending Pokémon is now Poisoned.
20
Rolling Thunder
Flip a coin. If heads, this attack does 10 damage to each of your opponent's Benched Pokémon. If tails, this attack does 10 damage to each of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
50
Illustrator: Hironobu Yoshida
Aquapolis 150/147 (Super Rare Holographic)
NIDOKING
Evolves from Nidorino (Stage 2)
Hit Points
120
Type
Fighting
Weakness
Water
Resistance
Retreat Cost
Level
Poké-BODY
Power Gene: As long as Nidoking is in play, your attacks by Nidoran (F), Nidorina, Nidoqueen, Nidoran (M), and Nidorino do 10 more damage to the Defending Pokémon.
Cost
Name
Effect
Power
Earth Poison
If the Defending Pokémon already has any damage counters on it, the Defending Pokémon is now Poisoned.
40
Bound Crush
Choose 1 of your opponent's Pokémon. This attack does 60 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Nidoking can't use Bound Crush during your next turn.
, 
, or 
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.