Koga's Ekans (77/132) [Gym Challenge Unlimited]Set: Gym Challenge Unlimited Type: Grass Rarity: Common Retreat cost: Colorless

Set: HeartGold & SoulSilver: Unleashed Type: Grass Rarity: Rare Retreat cost: Colorless

Set: EX: Dragon Type: Water Rarity: Rare Retreat cost: Colorless

Set: Fossil Unlimited Type: Psychic Rarity: Rare Retreat cost: Colorless

Set: Black & White: Black Star Promos Type: Darkness Rarity: Promo Retreat cost: Colorless

Set: Black & White: Base Set Type: Energy Rarity: Common

Set: Diamond & Pearl: Black Star Promos Type: Item Rarity: Promo

Set: Black & White: Legendary Treasures Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Set: Sun & Moon: Ultra Prism Type: Water Rarity: Common Retreat cost: Colorless

Set: XY: Evolutions Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Diamond & Pearl: Great Encounters Type: Water Rarity: Common Retreat cost: Colorless

Set: XY: Ancient Origins Type: Lightning Rarity: Holo Rare Retreat cost: 0

Set: Black & White: Dark Explorers Type: Psychic Rarity: Secret Rare Retreat cost: Colorless