So we are talking about e.g. throwing the Necronomicon at an enemy with +3 fight and after dealing 3 dmg to it without spending 4 secrets ? And that we can do at least 2 times. Thats a very refreshing way to abuse that old thingy.

One of thing to note in particular is that this action can be performed on an Elite enemy. The majority of the time you're going to get +2 or +3 to Fist, so it's probably best to have this card in the deck of an investigator w/3+ Fist. I'd consider 1 resource for 1 Damage & Auto-Evade a boss to be a pretty decent bang for your buck. Or inversely, 1 Damage & an action from the book of your choosing. Pretty solid for a Level 0 card in my opinion.