- "As If": This was added to the FAQ (v.1.7, March 2020) and then amended (v.1.8, October 2020). You can read the October ruling on the ArkhamDB rules page here. (I'm adding a hyperlink rather than retyping the rules in case in future the ruling is changed or amended - at that point, the rules page will be updated and all ArkhamDB FAQ entries will link to the correct ruling.)
Foolish Cat of Ulthar
Ally. Creature. Dreamlands.
Carolyn Fern deck only. Replacement.
Foolishness enters play with 3 horror on him. Horror on him may be healed as if it were on Carolyn Fern. While Foolishness has no horror on him, you get +1 to all skills.
+1 to all skills is pretty nice, and Dr. Fern can't take Crystalline Elder Sign, but this card is moderately expensive (although Carolyn has good economy, made better by targets for horror healing), slow to get moving (a whole turn of actions to get to full), and your ultra-valuable ally slot is filled with soak that you can't rely on too much. This, coupled with a signature weakness that usually ranges from alarming to deadly, makes Foolishness an expensive add to a Carolyn deck. Probably best to stick with the "box" signature set.
I think this is an underrated ally for Carolyn.
Although if you look closely, you might realize, why this cat is unbelievable great. Bear in mind, Carolyn's main ability and this little text from FAQ "Other card abilities or game effects do not resolve with the altered game state in mind; only the indicated ability/action." - you get:
If healing two horrors from Carolyn, but actually removing it from both her and her cat, you get two resources, instead of one. Clarity of Mind helps with that))
As a side note - FFG always makes better versions of the personal cards in the books :)