I want to say that this card helps you progress and win scenarios in a way many others do not: It effectively boosts any skill directly.
What do I mean by that? Imagine having your Fingerprint Kit or Grim Memoir and 2x Magnifying Glass. But suddenly, your location has an important (very beneficial or even mandatory) test that is not an investigation. Great, the usual +4 you enjoy 90% of the time when using that skill are completely gone now.
Or you are "Ashcan" Pete with Duke, Boxing Gloves on his paws, clearing the path for you. Then, a Locked Door cock blocks your way and you see yourself standing against that with a wimpy 2 (or 3 , for that matter).
See, being able to approach any test the scenario throws at you* with at least 7 skill value (Lily's starts at 2) is a huge advantage that can cost other investigators so many actions, burning their skill cards and fighting the scenario's odds head to head.
*sans mythos phase