|
You only need rest at the beginning of the day, to refresh your used spell slots and clear out any unused ones.
Until he prepares spells from his spellbook, the only spells a wizard has available to cast are the ones that he already had prepared from the previous day and has not yet used. During the study period, he chooses which spells to prepare. If a wizard already has spells prepared (from the previous day) that he has not cast, she can abandon some or all of them to make room for new spells.
When preparing spells for the day, a wizard can leave some of these spell slots open. Later during that day, he can repeat the preparation process as often as he likes, time and circumstances permitting. During these extra sessions of preparation, the wizard can fill these unused spell slots. He cannot, however, abandon a previously prepared spell to replace it with another one or fill a slot that is empty because he has cast a spell in the meantime. That sort of preparation requires a mind fresh from rest. Like the first session of the day, this preparation takes at least 15 minutes, and it takes longer if the wizard prepares more than one-quarter of his spells.
If you read the whole Preparing Wizard Spells section, it is clear that only the first preparation of the day requires you to be fresh from rest.
Hi.
So, I'm looking at Fast study :
Benefit: Normally, a wizard spends 1 hour preparing all of his spells for the day, or proportionately less if he only prepares some spells, with a minimum of 15 minutes of preparation. Thanks to mental discipline and clever mnemonics, you can prepare all of your spells in only 15 minutes, and your minimum preparation time is only 1 minute.
As far as I understand it, the purpose of the Discovery is leaving spell slots open, to fill them "on the fly" during adventure with minimal time. As written, it sounds like a good use of a feat, and very practical.
Here's why I have a problem. Under the general magic rules and wizard spells preparation, we find this :
Rest
To prepare his daily spells, a wizard must first sleep for 8 hours. The wizard does not have to slumber for every minute of the time, but he must refrain from movement, combat, spellcasting, skill use, conversation, or any other fairly demanding physical or mental task during the rest period.[...] and he must have at least 1 hour of uninterrupted rest immediately prior to preparing his spells.
(emphasis mine)
So, this would mean that even if a Wizard purposely leaving some slots open and then in the middle of the adventure decides to study a spell, he needs :
A) 1 hour of uninterrupted rest
B) 1 min to study the spell (rather than the normal 15 min needed)Is this the intended ruling ?
I can't see any situation where fast study is useful, if all it can do is reducing the time for studying on the fly from 75 to 61 min.
(It also reduces total studying time from 1h to 15 min, but I've never had a single game / campaign where this would have had any impact)
Gurior, you're leaving out a very important part of that text. The full text reads as follows:
Rest: To prepare his daily spells, a wizard must first sleep for 8 hours. The wizard does not have to slumber for every minute of the time, but he must refrain from movement, combat, spellcasting, skill use, conversation, or any other fairly demanding physical or mental task during the rest period. If his rest is interrupted, each interruption adds 1 hour to the total amount of time he has to rest in order to clear his mind, and he must have at least 1 hour of uninterrupted rest immediately prior to preparing his spells. If the character does not need to sleep for some reason, he still must have 8 hours of restful calm before preparing any spells.
The way I see it, the part you bolded out only becomes an issue if you ignore what’s written before it. The “and he must have at least 1 hour of uninterrupted rest immediately prior to preparing his spells” clause is only effective when the wizard got his rest interrupted.
Hope this was helpful, cheers.