Koga's Ekans - Common Tweet Out of stock. Wishlist Details Attack #1: Fast-Acting Poison - Flip 2 coins. If both are heads, the Defending Pokemon is now Confused and Poisoned. Card Type: Grass HP: 50 Illustrator: Ken Sugimori Name: Koga's Ekans Rarity: Common Retreat Cost: 1 Set: Challenge from the Darkness Stage: Basic Weakness: Psychic