Spells Known Rule of Thumb?

Ogrork the Mighty said:
Do you have a general rule of thumb for how many spells an NPC wizard (for example) knows, above and beyond the minimums as stated in the PH?

I realize NPCs can buy scrolls and scribe them into the spellbooks, but that requires a lot of bookkeeping (if you want to be accurate) so I'm looking for a good rule of thumb.

Thoughts?
As a rough estimate, I usually go with double of what they can cast per day. This might be a little light, though...
 

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Ogrork the Mighty said:
Do you have a general rule of thumb for how many spells an NPC wizard (for example) knows, above and beyond the minimums as stated in the PH?

I realize NPCs can buy scrolls and scribe them into the spellbooks, but that requires a lot of bookkeeping (if you want to be accurate) so I'm looking for a good rule of thumb.

Thoughts?

Usually I give them only the spells which they get for free when levelling up.

I thought that if you give them some extra spell known by copying from scrolls, you should deduct the scroll cost & copying procedure cost from the NPC equipment.

But then in that case I might ignore bookkeping and just give the NPC whatever spell I want it to have, after all the equipment value is an average and it doesn't have to be the same for everyone in the world.
 

Patryn of Elvenshae said:
They'd need one a lot sooner than that; each spell takes up [Spell Level] pages.

Thanks for catching that, I edited my post accordingly. By the way, here's the total pages breakdown by level (still does not include bonus 1st level spells for high Int)

Code:
Lvl	Pages
1st:	24
2nd:	29
3rd:	33
4th:	39
5th:	47
6th:	56
7th:	67
8th:	81
9th:	97
10th:	115
11th:	138
12th:	163
13th:	193
14th:	233
15th:	280
16th:	336
17th:	405
18th:	489
19th:	578
20th:	689
 

Thinking about the multiple spells books...

The "Blessed Book" seems to have an error in the description. It says in the SRD that "A wizard can fill the 1,000 pages of a blessed book with spells without paying the 25 gp per page material cost." But then in the magic overview section, it says that "Materials for writing the spell cost 100 gp per page."

If the Blessed Book is intended to completely eliminate the scribing cost, then it is something every wizard should pick up, because it costs 12500 and would save you over 50000 in scribing costs. If it is intended to just provide a 25gp per page discount, then it is still worth it, depending on when in his career the wizard can get one. At that price, scribing more than 500 pages into the book would make it worthwhile, so the wizard would need to get the book early enough in his career to make that likely. (Of course, the convenience of having only one book to lug around would add to its value.)

This math also does not consider the possible spell-trading that was mentioned above, and also does not consider the value of any captured spellbooks, which eliminate 50gp per spell level of costs.

If there is interest, I will run the math for a higher-level starting PC wizard as well, because their starting money is so much higher than an NPC, so they should have even more spells (although, if I were playing a starting mid-level PC, I might just use these numbers and spend more of my gold on items.)
 

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