Way of the Black Star

The night sky has offered peace and solace in times of turmoil, exposing the insignificance of those who walk upon the earth, yet you do not call out for peace. Your meditations have taken you to the void where the Fallen Exile once shined, filling your spirit with a blackened and sorrowful power. This may have come to pass by the intervention of the Exile, spiritual enlightenment you have sought yourself, or the teachings of a master who has traveled this dark path. Regardless of your original intention, your ki has been corrupted by this unnatural void within the cosmic order, granting you the ability to draw it forth to form a deadly weapon of light and eerie blackness. Fueling your techniques with the anguish of your foes, you strive ever closer to understanding the secrets within the eternal black star that lies at the center of the cosmos.

Void Blade

At 3rd level, you learn to pull the corruption in your ki forth to create a weapon from light and shadow. This monk weapon inflicts 1d8 slashing damage and has the light, finesse, and thrown (30/60) properties. You can choose to manifest this weapon whenever you would attack with it, and it vanishes when it leaves your grasp or after being thrown. You can choose the appearance of this weapon whenever you summon it, but it always appears to be constructed of pure blackness clad in streamers of light.

Moonlight Techniques

Also at 3rd level, your meditations unlock the powers hidden within your void blade, and you can channel your ki to activate them. You can spend 1 ki point to cast black lotus assault, duskwalk, falling spider’s spite, or masterful focus without providing material components.

AUTHOR'S NOTE: DnD Beyond won't allow me to connect spells to your Ki points, so please keep in mind the Ki cost of casting these spells, and adjust your spent points accordingly.

Acolyte of the Lost Sun

At 6th level, your ki begins to manifest around your body as tiny motes of shadow that seek to preserve life even as it is taken. Whenever you cast a spell by spending ki points, you can use your bonus action to enter a defensive stance until the start of your next turn. The first time you take damage while in this stance, you can reduce that damage by three times the number of ki points you spent to cast the spell.

Starlight Techniques

Also at 6th level, the darkness within your void blade deepens, granting you further power. Your void blade’s damage is now considered magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage. Additionally, you can spend 2 ki points to cast tormented flurry*, shadow armor*, dark secret*, or heartripper* without providing material components. Finally, you can spend 2 ki points to cast the spells granted by your Moonlight Techniques feature as if they were cast using a 2nd-level spell slot.

AUTHOR'S NOTE: Just as before, I cannot track your Ki points when making a subclass, so please be aware of the Ki cost when casting spells!

Open Soul

At 11th level, your ki has become completely consumed by the space between the stars, leaving you with a soul laid bare to the secrets of the universe and open to consume the ki of others. Whenever you reduce a creature to 0 hit points using a monk weapon or unarmed strike, you gain advantage on your next attack roll, ability check, or saving throw.

Sunless Techniques

Also at 11th level, your devotion to the darkness beyond the sky allows you to call forth even greater power. You can spend 3 ki points to cast creeping dark*, fox’s fangs*, shadow refuge*, or shadow toxin* without providing material components. Finally, you can spend 3 ki points to cast the spells granted by your other Path of the Black Star features as if they were cast using a 3rd-level spell slot.

AUTHOR'S NOTE: Once again, please keep track of Ki points accordingly.

Otherworldly Knowledge

At 17th level, your spiritual journey has led you to gaze into the black heart of the stars themselves, where all light is eventually consumed, and it has gazed into you, granting you the collective wisdom of the universe. As an action, you can open your mind to this for 10 minutes. During this time, you gain proficiency in all skills and tools, and you can use your Wisdom modifier, instead of another ability modifier, for any skill check.

Once you use this feature, you can’t do so again until you finish a short or long rest.

AUTHOR'S NOTE: I can add the action to use this feature, however, DnD Beyond doesn't have a way for the use of that action to effect your stats, such as granting proficiency. Please keep this in mind whilst adventuring!

Eclipse Techniques

Also at 17th level, you complete your explorations of your void blade and have finally seen the truth beyond the dark within. You can spend 4 ki points to cast assassin’s promise*, crimson cloak*, flashing blades*, or unseen claw* without providing material components. Finally, you can spend 4 ki points to cast the spells granted by your other Path of the Black Star features as if they were cast using a 4th-level spell slot.

AUTHOR'S NOTE: Ki points. Keep track of them. Cause I can't. You get the drill by now.