Waeveghost

Ethereal Sight. The ghost can see 60 feet into the Ethereal Plane when it is on the Material Plane.

Incorporeal Movement. The ghost can move through other creatures and objects as if they were Difficult Terrain. It takes 5 (1d10) Force damage if it ends its turn inside an object.

Multiattack. The ghost makes two Withering Touch attacks.

WeaveTouch. Melee Attack Roll: +8, reach 5 ft. Hit: 25 (4d10 + 5) Force damage.

Etherealness. The ghost casts the Etherealness spell, requiring no spell components and using Charisma as the spellcasting ability. The ghost is visible on the Material Plane while on the Border Ethereal and vice versa, but it can’t affect or be affected by anything on the other plane.

Possession (Recharge 6). Charisma Saving Throw: DC 18, one Humanoid the ghost can see within 5 feet. Failure: The target is possessed by the ghost; the ghost disappears, and the target has the Incapacitated condition and loses control of its body. The ghost now controls the body, but the target retains awareness. The ghost can’t be targeted by any attack, spell, or other effect, except ones that specifically target Undead. The ghost’s game statistics are the same, except it uses the possessed target’s Speed, as well as the target’s Strength, Dexterity, and Constitution modifiers.

The possession lasts until the body drops to 0 Hit Points or the ghost leaves as a Bonus Action. When the possession ends, the ghost appears in an unoccupied space within 5 feet of the target, and the target is immune to this ghost’s Possession for 24 hours.

Success: The target is immune to this ghost’s Possession for 24 hours.

Spellfire (Recharges after a Long Rest). Magical, heatless, silver fire harmlessly erupts from Waeveghost and surrounds her until she is incapacitated or until she uses an action to quench it. She gains one of the following benefits of her choice, which lasts until the silver fire ends:

• She is immune to magic that would ascertain her thoughts, truthfulness, alignment, or creature type.

While the silver fire is present, she has the following additional action options:

• Cast the cure wounds spell. The target regains 1d8 + 5 hit points. After Waeveghost takes this action, roll a d6. On a roll of 1, the silver fire disappears.
• Cast the revivify spell without material components. After Waeveghost takes this action, roll a d6. On a roll of 1–2, the silver fire disappears.
• Release a 60-foot line of silver fire that is 5 feet wide or a 30-foot cone of silver fire. Objects in the area that aren’t being worn or carried take 26 (4d12) fire damage. Each creature in the area must succeed on a DC 21 Dexterity saving throw, taking 26 (4d12) fire damage on a failed save, or half as much damage on a successful one. After Waeveghost takes this action, roll a d6. On a roll of 1–3, the silver fire disappears.

Waeve Analysis: the Weaveghost can se other magical effects like under effect of [Tooltip Not Found] using a Bonus Action. 

Waeve Shield: with a reaction the Waeveghost can dispel a magical effect or a spell he can see, in a range of 36 mt.

Have 3 legendary action that do at the end of a enemy turn, regain at begin of his turn.
Silver Fire: Release a 60-foot line of silver fire that is 5 feet wide or a 30-foot cone of silver fire. Objects in the area that aren’t being worn or carried take 26 (4d12) fire damage. Each creature in the area must succeed on a DC 21 Dexterity saving throw, taking 26 (4d12) fire damage on a failed save, or half as much damage on a successful one. After Laeral takes this action, roll a d6. On a roll of 1–3, the silver fire disappears. Cost 2 Action.

Blink: disappear and move in 60-foot line whitout provoke opportuinity attack.