Det är högt osannolikt att varelser behöver vila för att återfå sina användningar av deras stavningsliknande förmågor; en sådan begränsning skulle anges tillsammans med sådana förmågor. Annars,
Spelet säger inte ...
I likhet med vad du vill veta finns i Regelkompendium : s nya regler för dagliganvändningsposter som säger
Many magic items have a limited number of uses per day. When the last of these uses is used, that power is no longer available for the day, but the item is still magical and might have other powers available. Unless otherwise noted in an item’s description, any item that has daily uses regains all those uses at dawn each day. (86)
Avvikande andra regler, det verkar vara en tillräckligt bra husregel som någon att hantera när en varelse återvinner sin användning av sina förmågor per dag.
... Men Sage Opined
I kolumnen Drake # 338 Sage Advice "Officiella svar på dina frågor" frågades då Sage Andy Collins
What exactly does "once per day" mean? Does it mean "once per 24-hour period" or is it recharged after the character rests for 8 hours, like spells?
Till vilken Collins svarade
It means that in any given day, the ability may be used once. So what constitutes a day? That's where things get a little tricky and rely on the DM's common senses.
The Sage advises using daybreak as the start of a "day," meaning that all daily-use abilities are recharged in full each morning, regardless of exactly when they were used during the previous 24-hour period. For the vast majority of games, that's when most abilities are recharged anyway (spells, for example), which makes it easy to use.
If your players try to abuse this flexibility--such as by adventuring through the night and then suddenly getting all their abilities back when the sun comes up--the DM should feel free to be more restrictive. It's entirely reasonable to require a full 8 hours of rest before allowing daily-use abilities to recharge (even for those characters who don't require sleep). (84)
Det är förmodligen som "officiellt" som det kommer att få.