"Jabhil's sacrificial dagger, a chilling reminder of her fateful encounter with the Anthous. May her reincarnations echo the relentless cycle of life, where nature's harmony and vengeance intertwine."
A crystalized green dagger imbedded with red roses, only activated by the presence of another wisp within 60ft of the wielder. 
DORMANT
-Soul of Ancients Past: A storm of thorn vines seemingly erupts from nowhere. When you hit a creature with this weapon, you have a 10% chance of dealing 8d6 slicing damage at the start of your next turn in a 10 foot radius originating from the place where you hit the creature. (d100: 90-100)
- Hit: +1 to attacks

AWAKENED
Prerequisite: You must deal 150 slicing damage with Soul of Ancients Past.
Quick to the slaughter: +2 bonus to attack.
Sacrifice: As an action, you can channel ancient magical energy from this weapon to make a single weapon attack. On a hit, the target instantly dies if it's near death (1/4 life), or if it's an ally. 
Dance of Anthous
"They stood before me then, Seven Gods of Nature who imparted the beauty found in life's final moments. No longer did I fear her, instead seeking her comfort."
Prerequisite: Sacrifice a humanoid.
Channeling time: 3 minutes. 
You touch a creature that has died in the last 7 months. That creature returns to life with hit points equal to your current total hit points(up to their maximum) 
You die.
It closes all mortal wounds, but does not restore missing body parts. If the creature died of old age, or the creature is lacking body parts crucial for survival- its head, for instance- the spell automatically fails. 

Proficiency with a Dagger allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Damage: Additional, Damage, Combat, Finesse, Light, Thrown, Nick