Convey Inner Peace

5th-level transmutation
Casting time: 10 minutes
Range: 30 feet
Target: You and up to five willing creatures within range
Components: V, S, M (powdered gemstones worth at least 50 gp, which the spell consumes)
Duration: 24 hours
Classes: Bard, Cleric, Druid, Sorcerer, Warlock, Wizard
Subclasses:

You imbue yourself and up to five willing creatures within range with the ability to enter a meditative trance like an elf. Once before the spell ends, an affected creature can complete a long rest in 4 hours, meditating as an elf does while in trance. After resting in this way, each creature gains the same benefit it would normally gain from 8 hours of rest.