Dreamwalk

2nd-level enchantment (ritual)

Casting Time: 1 action
Range: 30 feet
Components: V, S, M (a tiny dreamcatcher)
Duration: 24 hours
Class: Bard, Druid, Ranger, Warlock, Wizard

Choose up to ten willing creatures you can see within range. For the duration, they gain the ability to lucidly dream whenever they sleep. While lucid dreaming, a creature always knows if the Dream spell is being used to target it. In addition, when you cast this spell, each creature affected by it can choose to instantly fall asleep, even if that creature has a trait that normally prevents it from being magically put to sleep (such as elves’ Fey Ancestry).

Source: Heliana's Guide to Monster Hunting