1) Maybe can add saltpetre . Properties: slow burn , creates very much smoke , burn with bright-purple or purple flame , he is burning out other materials (but only in the given place something like laser).
Adding the other various ingredients(thermit,gun powder,coal? ) would give different effects.
2) Add a sulphur . Properties : during the burn he will be create poisonous gas
@mirek123(View Post) 1. Saltpetre is an oxydizer, it doesn't burn by itself, it doesn't burn slowly, and the properties you described are already used by Coal. 2. Poisonous Gas is Stickman related, therefore not really interesting to add. This is not the Powder Game.
1)Potassium nitrate with the sugar but, saltpetre will be enough, rules it is possible to change in TPT. And smoke from her will be white . 2) Poisonus Gas (acid gas) he could mix with Steam , creating Acid