The tonic djinn can only successfully be used once per day. Mafia should track this for automatic usage.
There are various messages for successful usage, but they appear to start with "The djinn snaps his fingers". The failure message is this:
The failure message appears after you hit an option in choice adventure 778.
I also just found that the tonic djinn is not removed from mafia's inventory if a choice is taken (options 1-4) and you haven't used one today. It should not be removed if option 6 (Let me think about it.) is taken.
There are various messages for successful usage, but they appear to start with "The djinn snaps his fingers". The failure message is this:
HTML:
<span class="guts">"Wait a second. I just checked with my Djinn buddies, and you've already had a wish today. What are you trying to pull?"<p>He disappears back into his bottle.</p><p>You put the bottle away.</p></span>The failure message appears after you hit an option in choice adventure 778.
I also just found that the tonic djinn is not removed from mafia's inventory if a choice is taken (options 1-4) and you haven't used one today. It should not be removed if option 6 (Let me think about it.) is taken.