Your campsite contains a lovely 3-shelf bookshelf -- handsome mahogany inset with mother-of-pearl mystical runes! It's got a shelf for Tomes, a shelf for Librams, and a shelf for Grimoires...
Tomes: Tomes contain powerful spells. So powerful that you can only use your Tomes three times per day, lest you become absolutely corrupted by the absolute power.
Librams: Librams also contain powerful spells. Each time you use a Libram in a day, it'll take you more and more energy to use another one. Or the same one again. You'll get the idea once you start using them.
(Your bookshelf doesn't have any Grimoires on it.)
Notes
The bookshelf will only appear in your campground if you have used at least one Tome, Libram or Grimoire.
The bookshelf is not affected by Hardcore or Ronin restrictions. However, it is not visible while in Bad Moon, although it is currently possible to access the bookshelf through direct linking. Originally it was possible to use the books normally to cast spells this way, but this was soon fixed.
Books can be placed on your bookshelf while in Bad Moon, although it is not possible to cast the spells they grant until you have ascended under another moon sign.
The MP cost for summoning your nth Libram item is 1+(n*(n-1)/2), or 1+(1+2+3+...+(n-2)+(n-1)). This price resets upon rollover and ascension.
The cumulative MP cost for summoning n libram items is (n*(n²+5)/6) or (n*(n+1)*(n+2)/6)-(n*(n-1)/2).
Use #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
MP Cost
1
2
4
7
11
16
22
29
37
46
56
67
79
92
106
121
137
154
172
191
Total MP
1
3
7
14
25
41
63
92
129
175
231
298
377
469
575
696
833
987
1159
1350
The bookshelf was implemented on January 3rd, 2008, as a way to limit the disadvantage that new players down the line would experience by missing out on powerful, limited-time-only spellbooks such as the Tome of Snowcone Summoning. Prior to its implementation, spellbooks granted their skills, automatically marked Hardcore Permanent, directly to players.
References
The description of the Tome shelf references Lord Acton's famous dictum: "Power tends to corrupt, and absolute power corrupts absolutely."
