witch using an endless grimoire

[x x 806]

A lot of the grimoire have the text

"that you prepared from this grimoire,"

but the endless grimoire has the text

"If you use the
grimoire during your daily preparations and are capable
of preparing spells of the appropriate
level, the grimoire’s nature leaks into
your mind, allowing you to prepare an
additional 1st-level spell."

So a Witch could have one more spell slot of 1st level?

the other part
"The grimoire’s eagerness to contain your spells grants you a +1 item bonus to checks to Learn a Spell if you do so by transcribing the spell into the grimoire."
with the witch that can .
"You can use the Learn a Spell exploration activity to prepare a special written version of a spell, which your familiar can consume as if it were a scroll "

Can the witch prepare that special version by writing it in the grimoire and tear the page to feed it to the familiar and get the bonus to learn a spell?

[Ravingdork]

Well, I would probably allow it anyways.

[graystone]

Just make a baba yaga witch and make the grimoire your familiar. :)

[breithauptclan]

The base rules for a Grimoire fairly clearly say that they can be used by any spellcaster that prepares spells.

Grimoire wrote:

If you prepare spells (whether from your class features, like a cleric or wizard, or from a special feat or ability, like the Esoteric Polymath bard feat), you can study a grimoire during your daily preparations to enhance one or more of the spells within. Until your next daily preparations, you gain the ability to Activate the grimoire.

Since it includes Cleric in the list of examples, it is defining its own meaning of 'prepared from this grimoire' rather than using the Wizard's Spellbook meaning of that phrase.

Some of the wording choices for the description of events are rather poor - it seems to imply that it only works for spellcasters that have a Spellbook class feature. But the mechanics rules text do not make that restriction.