Only take for a deck that has a superb effect.

Akachi Onyele and Father Mateo have super powerful effects so they are obvious benefactors. Father Mateo especially likes this since he has a choice of benefits in addition to an "Automatic success" result.

An incredible trump card to play against a key opponent, a game-stopping treachery like Locked Door or to gain tempo during crunch-time. This card is as varied as the important tests that may come up. In single player try to hold onto this for those tests that you just aren't geared for (Aforementioned Locked Door is a good example of something that just screws over a . In multiplayer the card also gains a new niche as a way to net easy, no-risk kills on enemies engaged with your friends.

Don't forget that you can boost a buddy, characters like "Skids" O'Toole, Finn Edwards, Silas Marsh or Zoey Samaras all get massive benefits, some of which really kick off with foreknowledge (Like Zoey's damage buff, which is incredibly powerful when you can plan and account for it, all of a sudden she can one-shot a major threat.).

It's expensive XP-wise, but this can be used to address Marie Lambeau's weakness, Baron Samedi. Since a star allows you to add doom, you can speed up the Baron's exit by a full round. Pushing him out 1 turn sooner means you can get rid of him on agendas that would advance at 3 or 4, while otherwise you need at least a buffer of at least 6. Getting 3 doom on the Baron over 3 separate rounds is surprisingly hard.

Expensive. I think this card is waiting for an investigator who can take it who has a bomb elder sign.

As is, I can't really think of many reasons to take it, outside of multiplayer. 5 for a (probably) auto-success is okay?

Very team comp dependent. Some investigators love it, some of your buddies will love it. I think it is waiting for its moment to shine.