Touched By The Defender Of Dreams

You've been given powers from the creature that is strongly connected to dreams.

When you start a Long Rest you can share a dream with a number of creatures of your choice that are asleep or completing a Long Rest. The number of creatures is determined by your Proficiency Bonus + Your Wisdom Modifier (minimum one). The targets must be on the same plane of existence as you and you are supposed to be familiar with the target. You are not in control of a dream but can exit the dream at will. You can also complete a Long Rest by sharing a dream with someone for hours required for a Long Rest. If a creature doesn't want you to be in their dream they are supposed to make a Wisdom Saving Throw, DC equals 8 + Your Proficiency Bonus + Your Wisdom Modifier. 
Creatures that don’t sleep, such as elves, can’t be contacted by this ability unless they are willing to enter a special trance state that allows them to see your dreams. 

In addition to that, you have charges equal to half your level, rounded down. When another creature that you shared a dream with the more recent time makes an attack roll, an ability check, or a saving throw, you can use your reaction and spend 1 charge to roll 1d4 and apply the number rolled as a bonus or penalty (your choice) to the creature's roll.