A Stage 1 Pokemon Card of type Grass, Darkness with the title Dark Arbok and 90 HP of rarity Uncommon evolved from Ekans from the set Team Rocket Returns.  It has the attack Swallow Up with the cost Grass, the energy cost 1 and the damage of 10+ with the description: Before doing damage, count the remaining HP of the Defending Pokemon and Dark Arbok. If the Defending Pokemon has fewer remaining HP than Dark Arbok's, this attack does 10 damage plus 30 more damage. It has the attack Extra Poison with the cost Colorless, Colorless, the energy cost 2 and the damage of 30 with the description: If the Defending Pokemon is Pokemon-ex, the Defending Pokemon is now Asleep and Poisoned. It has weakness against Psychic 2. 
Dark Arbok