Floranecromancy

Floranecromancy is a broad term used to express the acquisition and casting of two spells, Raise Dead: Flora and Floral Healing. One is useless without the other, though the energies channeled to fuel these spells are as-of-yet unknown.
It does not involve souls, or by proxy their consent to return.
Though it has taken the spotlight in the generational divide between the Ilaen and Haki of Evergrove, ultimately it is not the root of the issue.