Been a DM many times in the past, but Im' currently starting a new campaign. I have an NPC who is basically an Eco terrorist as an emissary of Gaia recruiting the party to help him save the earth. Now, this is a Chest deep game and I chose that for a reason.

One of the PC's is a Private Eye who has the minor talent of "Dumb Luck". I'm struggling to find situations where that would not apply in both positive and negative ways. Right now the NPC basically hired him to find suitable people to help save the earth and my idea is that he kind of just wanders into the rest of the party in the span of a few hours. The issue is that it would apply way too often. I know you limit them being able to compel the aspect with the fate tokens so they can't use more than they have but I'm just kind of worried that they'll compel the aspect in a negative way way too often and kind of game the system. Advice?