badly poisoned should be exclusive to poison pokemon and then maybe some one-offs like sandshrew, umbreon, breloom, etc. i know toxic has 100% accuracy from poison pokemon but it's not like 90 acc normally isn't totally viable. tm06 should a poison powder/gas equivalent with really good distribution and toxic should be level up move only. there also needs to be a status condition that cuts special attack. but burn, paralysis and frozen are fine as they are