This card singlehandedly makes Ceremonial Sickle and to a much lesser extent its upgrade not absolutely terrible. The problem with the sickle is the secondary attack having no bonus to hit, requiring some expenditure of resources into an already expensive card to deal a single point of damage. But with the mask, because you're going to be clearing and re-applying doom constantly, you'll have no shortage of +2s to help overcome the missing attack bonus.

Simple notes:

• With Fine Clothes, the difficulty of the test becomes (0), which means that each test will succeed except auto-fail().
• A clue at a connecting location could be discovered via Vamp(3) by testing to move the enemy to a connecting location (only for non-Elite) before test.

Am I reading this wrong or is this just bonkers good? 2 cost card, spend up to 3 actions to get that many testless clues. Even if it was that text alone, it would be a fantastic level 0 card in a class notoriously bad at straight investigating. Add on to it you can have others join in on the fun, and as Rolandironfist pointed out there are safeguard shenanigans AND Carson loves cards like this, it's just an incredibly good card in my opinion.

For anyone else wondering, the "h token" in the description is a curse token. That's really all I had to say. It's an interesting piece of curse tech? A smidge expensive, though, at 1 card and 1 resource.

The Key of Solomon is one of the best cards for the Blurse archetype, to the point where characters who normally wouldn't care about Blessings or Curses should potentially think about running Blurse solely to fuel it.

For Curse investigators, The Key of Solomon is the best economy card in the game that refunds itself on the same turn it's played, with the added bonus of removing 1 Curse token from the bag per turn at Fast speed. As soon the Key of Solomon is in play (preferably with a card like Spirit of Humanity or Gabriel Carillo to consistently fuel it), Curse investigators can give Rogues like Jenny Barnes or Preston Fairmont a serious run for their money in the resource generation department.

For Blessing investigators, The Key of Solomon is the best healing card in the game on par with Hallowed Mirror paired with Soothing Melody. Being able to consistently heal investigators and allies for any combination of 2 damage and/or 2 horror every turn without needing to spend actions is pretty incredible. Unfortunately, it's a bit harder to keep the chaos bag flooded with Blessings than Curses, but the payoff is strong enough for Blessing tech that even investigators like Carolyn Fern and Vincent Lee should seriously consider running at least running Spirit of Humanity, Radiant Smite, and The Key of Solomon for the synergy alone.

And if your table happens to be running any combination of Blessing and Curses, you get the best of both worlds. I'd be shocked if The Key of Solomon wasn't on the next Taboo list, so abuse it while you still can.