Once Yiskalla wished that he could spend an entire day reading without being tired, so he created this.  Choose one creature within range as your target and sing a sweet soothing sonnet to them.  This creature gains the ability to stave off the effects of exhaustion and can continue for another 16 hours without a long rest.

At higher levels you can choose to cast the spell on multiple creatures.  At 3rd level you can cast it on four creatures, at 5th level you can cast it on seven creatures, at 7th level all creatures within range gain the effects, and at 9th level all creatures who can hear the caster gain the effects.