Spirit Walker

Your practice in clinging to the dark has brought you closer to the Ethereal Plane. You draw closer to it as you slink about in stealth or perform roguish manuevers.

Wispy Form

3rd-level Spirit Walker feature

Whenever you successfully deal sneak attack damage with your attack action, you can take the dodge action as a bonus action. This feature can be used a number of times equal to your dexterity modifier (minimum of 1). You regain all expended uses of this features when you finish a long rest.

Hidden in the Void

3rd-level Spirit Walker feature

If you have not moved yet this turn, you may take the "Hide" action with advantage. You do not have advantage from this effect against individuals that can see into the ethereal plane. When you take the "Hide" action using this feature, you do not need cover, as your observable features are muddled with the presence of the ethereal plane; this effect also does not work against individuals who can see into the ethereal plane. After you use the "Hide" action with this feature, your speed becomes 0 until the end of your turn. Moving after hiding with this feature reveals you, which may cause you to need to make another stealth check.

Ghastly Existence

9th-level Spirit Walker feature

You can cast the following: "Blink", "Levitate", "Gaseous Form", "Misty Step", "See Invisibility", and "Invisibility" at their lowest possible level without material components or expending a spell slot. You may only target yourself when you cast a spell using this feature.

You can cast spells using this feature a number of times equal to your dexterity modifier (minimum of 1). You may not cast the same spell more than once with this feature without finishing a long rest. You regain all expended uses of this feature when you finish a long rest.

Ephemeral

13th-level Spirit Walker feature

You can cast the following: "Haste", "Speak With Dead", "Fly", "Animate Dead", "Arcane Eye", "Banishment", and "Greater Invisibility" at their lowest possible level without material components or expending a spell slot. You have advantage on concentration checks to maintain spells cast with this feature.

You can cast spells using this feature a number of times equal to your dexterity modifier (minimum of 1). You may not cast the same spell more than once with this feature without finishing a long rest. You regain all expended uses of this feature when you finish a long rest.

Familiar Shape

17th-level Phantom feature

When you are unconscious and have 0 hit points at the start of your turn, you can become a specter, but you retain your ability scores and do not gain "Sunlight Sensitivity" unless you already possess it. (You gain a hover speed of 50ft (hover), the life drain attack, the "Incorporeal Movement" feature, all damage resistances, all damage immunities, and all the condition immunities that the "Specter" monster possesses.)

In this form, you have 5d10 health plus 5 times your constitution modifier (minimum of 0) and an AC of 12. While your specter form exists, you are considered stable and unable to be killed by death saving throw failures. Your specter form disappears if your true body's hit points increases or if your true body dies.

If you become unconscious again after your specter form disappear, you may use this feature again, but your specter form has the same number of hit points as when it last disappeared if you have not finished a long rest since its last use. Once your specter form is reduced to 0 hit points, it disappears, and you automatically receive a death saving throw failure, becoming stable no longer. Once your specter form has disappeared in this way, you cannot use this feature again until you finish 1d4 long rests.