Koffing Koffing is a relatively a good Pokemon. He has 50 HP And a Low retreat cost of one colorless energy. Koffing's only Bad Point is his Weakness to Psychic Pokemon. My advice for using Koffing is to attack Pokemon with 50 or lower HP. The attack is good because it does 10 damage and either poisons or confuses the defending pokemon. Koffing is usually works best if you have a potion in hand and a strong pokemon on the bench to back him up. Any grass deck that I make would have at least one Koffing. JasF13@aol.com