Dreamwalk

You concentrate for ten minutes, and enter the world of dreams. Any time spent here does not count towards a rest; spells cast here do not affect your spell slots in the waking world, but spells cast previously in the waking world count towards spell slots available (or unavailable) in the dream.

While in the dream, you can enter the dreams of others. You can affect their dreams, and communicate with them.

At Higher Levels: When cast at 4th level or higher, Dreamwalk allows the caster to add one willing creature within 5 ft. to the spell, per level at which the spell is cast. At 4th level, the caster may add 1 willing creature, at 5th level the caster may add 2, etc.