Hunter's Hagbook with no prepared casters

[ShivStabbington]

I'm running Graveclaw, just got through the encounter with Drusilla last night. And something I should definitely have noticed ahead of time, but only realized at the table, is that the Hunter's Hagbook is useless for my party. Our casters consist of a Bard, an Oracle, and a Summoner, all of whom are spontaneous casters, and the Hagbook, as a Grimoire, only functions for prepared casters.

Has anyone else run into this issue? Any advice on how to surreptitiously alter the book's function to be usable by such a party?

[Bryan Stephens]

Could it be a spell extender?

[Reaperzeus]

It isn't a big change to the book itself, so it's definitely still better with prepared casters, but I did convert Web of Intrigue into a ritual spell (which pretty much fixes that spell's issue of having no traditions listed). I then made the Hagbook the only real source for the ritual in writing.

[Ajaxius]

I believe that anyone can study a grimoire when preparing at the start of the day, but it doesn't give them the spells in the book unless they're a prepared caster that uses a spellbook (like a wizard, magus, or esoteric polymath bard.) It just gives them the other benefits.

So, if a spontaneous spellcaster prepares with the book at the start of the day and also just happens to already have one of the listed spells in their repertoire, then they can end the duration of the spell to boost their save against a coven spell.

That's still a lot of hoops to jump through for an absolutely garbage effect, so I changed the hunter's hagbook's "special ability" to the following:

Hunter's Hagbook wrote:

(Reaction)Hag Hunter's Heroism

Trigger: A monster from the Hag family uses an effect on you or an ally that requires a save, and that target is effected by a beneficial spell you cast on it that has a duration.
Effect: You end the qualifying beneficial effect, and the target improves the degree of success on their save by one step.

It helps it feel like an actually effective tool that Drusilla gives the PC's without having a wizard around, and while it's powerful, it also requires you to jump through some hoops.