Is there an RTB pref for how many times a Syringe can be used? If not, I think it would be a good idea to have one, preferably where you can choose how many times each individual syringe can be used, and having 0 = infinite. (For example, you could have it so that the hallucinogenic syringe can only be used once, while the anti-poison can be used 5 times and the poison only used thrice.)