Koffing (243/236) [Sun & Moon: Cosmic Eclipse]Set: Sun & Moon: Cosmic Eclipse Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

Set: Scarlet & Violet: Base Set Type: Fire Rarity: Secret Rare Retreat cost: Colorless

including many not found anywhere else

Set: EX: Power Keepers Type: Colorless Rarity: Common Retreat cost: Colorless

Set: EX: Delta Species Type: Lightning Rarity: Common Retreat cost: Colorless

Set: World Championships 2016 Type: Psychic Rarity: Common Retreat cost: Colorless

Set: Sword & Shield: Crown Zenith Type: Grass Rarity: Secret Rare Retreat cost: Colorless

Set: World Championships 2007 Type: Trainer Rarity: Uncommon

Set: Nintendo: Black Star Promos Type: Grass Rarity: Promo Retreat cost: Colorless

Set: Diamond & Pearl: Base Set Type: Lightning Rarity: Uncommon

Set: Sword & Shield: Base Set Type: Water Rarity: Secret Rare Retreat cost: Colorless

Set: Fossil 1st Edition Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Set: Nintendo: Black Star Promos Type: Psychic Rarity: Promo Retreat cost: 1