What does it mean to dream? What is one doing? What does sleep bring... And do dreams have any value? Many such mages and researchers might seek to answer this question. However, curiosity is not the right answer. Acceptance... And loyalty to the dream. That is the natural state from which we are born. Even as babies, we reflexively trust food, water. And sleep. When that trust manifests into profession you have chefs, adventurers... and Dream weavers. Smiths of the world on the other side of consciousness

Infectious Yawning

If a creature you put to sleep sleeps in combat for a full minute, they stay asleep for an additional 8 hours. When a creature you can see is initially affected by the sleep condition, the power of the dream can now spread to someone else. When a creature within 60 feet of you is affected by the sleep condition, you can use your reaction to encourage a different creature to share their fate, applying the same effect to them (they still make a save, need the requisite amount of hit points, ect.)

You can use this reaction a number of times equal to your Charisma modifier (minimum of once), and you regain all expended uses when you finish a long rest.

Sleep

You are a master at getting creatures to sleep. Sleep is a special condition that can be applied by you in a variety of ways some magical, some not. Creature's affected by the sleep condition fall Unconscious until the sleeping creature takes damage, a creature takes an action to wake them, or the effect's duration ends. Non magical sleep cannot affect constructs, undead or creatures immune to charm, but can affect creatures who have an ability stating they cannot sleep by showing them dreamlike visions instead. Magical sleep cannot affect creatures with a feature making them immune to it or other creatures who state they cannot sleep.

At third level, you learn a basic technique for storing mists that when inhaled, induce sleep. You can choose to either put them inside a storable object, making them non-magical, or conjuring these mists with magic, but regardless of which form of sleep you have, you may use this ability up to your proficiency bonus times per day to release the sleeping mist on a point you can see within 90ft of you as a bonus action. The mist covers a 20ft radius, and creatures who start their turn in the mist must make a Charisma saving throw against your spell save dc, or be affected by sleep for one minute. The mist is cleared by a strong wind (at least 10 miles per hour), or clears at the end of your next turn.

Improved Sleep

You learn the Sleep spell if you do not already know it. When you cast this spell, you roll an additional amount of d8s equal to your bard level, and uses the rules for the condition sleep as a magical source. In addition, when upcasting the spell above 5th level, you may roll double the amount of dice.

Trinan Technique

When you use your bardic inspiration on a creature, you may choose to imbue a weapon they are holding with non-magical sleeping mists for a minute. When they use an action to hit a creature with a weapon attack, if that attack is the first of their attack action, that creature must make a charisma saving throw against your spell save DC or they are affected by the sleep condition until the start of their turn. This sleep condition is not broken by damage. If the condition takes hold, the mists ends early.

Dream Eater

You consume the rest of creatures who sleep in your presence. When a creature you can see within 60ft of you is affected by the sleep condition (initially), you may expend one of their hit die, healing for the amount they would normally heal for. In addition, they take psychic damage equal to the amount rolled, which cannot wake them from sleep. If you use a bardic inspiration on a sleeping creature, it becomes a nightmare inspiration, gaining a new effect that replaces the usual one: "If the inspiration is still in effect when the target's sleep condition would end, the effect is instead negated against the target, and the inspiration's effect ends. This does nothing if the duration of the sleep ends to wake the target."

Note: All creature's have hit die. If you are a DM reading this and have no idea what a hit die is, just pick a die.