To the first paragraph of the rule “Spells”, add

A Spells tracked in an Apprentice’s section of the Spellbook wiki page are considered to be Known by that Apprentice.

In that rule, replace “An Apprentice may Cast a Spell by spending its Cost” with:-

An Apprentice may Cast a Spell they Know by spending its Cost

In the same rule, replace “which also indicates the Multiplier attached to each option. “with:

which also indicates the Multiplier attached to each option, which may be any positive real number.

Add a new subrule to “Powers”, entitled “Crib”:

Effect: If [Apprentice] cast [Spell] in the past 72 hours at [Location], the Caster may copy that Spell to their own section of the Spellbook wiki page.
Cost: 1

Add a subrule to “Parameters”, entitled “Spell”:

* (name of Spell Known by the Crafter, chosen when the Spell is Crafted) - X1
* (name of any Spell, chosen when the spell is Crafted) - X1.5
* a Spell known by the Caster - X1.5
* any Spell - X2

Add a subrule to “Parameters”, entitled “Location”:

* the current Location of the Caster - X1
* (name of a Location, chosen when the Spell is Crafted - X1.5
* any Location - X2