Hello, to be honest i think Twisted Fate needs a new passive because like many people have said 2 gold per minion kill is more of a supports passive not an Assassins one. The 2 gold will help you and your team very slightly but i just don't get why an assassin would have such a passive. He's got his Q and W as some reliable damage but that's not really enough for a AP mid or an Assassin in my opinion, that is why i think maybe he should have a passive to give him some more damage.
I have seen many threads like this and one of them suggested a passive called "lucky number 7" where Twisted Fate after 7 spell casts his next spell would have a bonus effect.
I thought this idea was really cool and i hope that they improve Twisted Fate's passive because i use him a lot and most of the time the bonus gold is really useless because most game the passive doesn't help you significantly, and very few games you can get some really good minion kills to make the passive effective.
Yes i know that he has a stun on a short cooldown and a champion revealing teleport but as a dedicated Twisted Fate player i really believe that an assassins abilities including the passive should help assassinate or atleast damage your opponents.
Maybe you could suggest a new passive or provide a good explanation why his passive right now is useful as an assassin/AP carry.