Ethereal Energy. At the start of each of her turns, Wraithblade regains 10 hit points, provided she has at least 1 hit point. If she is harmed on the Ethereal Plane this trait does not effect the damage.

Ethereal Totem. Wraithblade's soul is held in a Totem in the Ethereal Plane, so long as it exists she gains the following effects:

• She has Darkvision out to 60ft and Truesight of 30ft.
• She can move through other creatures and objects as if they were difficult terrain. She takes 5 (1d10) force damage if it ends her turn inside an object.
• Immunity to nonmagical damage while outside the Ethereal plane. 
• She has 'Partial shift'  Reaction which nullifies the damage of one attack while not on the Ethereal Plane.
• If vanquished she returns to life within 4d6 hours. 
• Her Notched Rapier do 4d8 force damage instead of 2d8. 
• The Ethereal Jaunt and Blink Step actions are bonus actions instead
• She is immune to the Paralyzed
• She is entirely under the control of her master
• Her Intelligence and charisma scores are 4 and can only do as commanded.

If the Totem is broken she loses all of the above effects except for being under the control of her master, but she can attempt to resist orders that are dangerous to herself or operate outside of a chaotic good morality with a DC 20 wisdom save. Additionally she can sever the connection if she succeeds on a DC30 wisdom save, lowered by 1 for each command resisted.

Multiattack. Wraithblade attacks twice with her Notched Rapier. After she hits or misses with an attack, she can teleport up to 30 feet to an unoccupied space she can see.

Notched Rapier. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage, plus 18 (2d8) force damage.

Innate Spellcasting (Psionics). Wraithblade casts one of the following spells, requiring no components and using Wisdom as the spellcasting ability (spell save DC 15):

At will: detect magic, detect thoughts, dispel magic, sending

1/day each: dimension door, fly, greater invisibility

Blink Step. Wraithblade teleports up to 60 feet to an unoccupied space she can see.

Ethereal Jaunt. Wraithblade can magically shift from the Material Plane to the Ethereal Plane, or vice versa.

Cunning Action. Wraithblade can dash or disengage as a bonus action. 

Uncanny Dodge. When hit with an attack from a creature she can see, Wraithblade can use her reaction to half the incoming damage.