Eleutheria's Replicant

This spell grows a replicant of a living or dead creature, which can be used as a vessel for a spirit that has been called back from the dead with an appropriate spell, if their original body has been rendered unusable. This replicant forms inside a sealed vessel over the course of 120 days and grows to the size and maturity the creature was when the body part was taken, or at the time of their death. It remains in stasis and endures indefinitely, provided its vessel remains undisturbed. The replicant is physically identical to the original, but has none of the original's equipment, and only after possession gains their memories, personality, and abilities. A living creature with a replicant will not automatically inhabit the creature upon death.

If the vessel is disturbed before possession the replicant awakens as a mindless, frightened creature and attacks indiscriminately using this stat block:

Armor Class: 8
Hit Points: 22 (3d8+9)
Speed: 20 ft.
STR 13 (+1) DEX 6 (-2)  CON 16 (+3) INT 3 (-4) WIS 6 (-2) CHA 5 (-3)
Saving Throws: Wis +0
Senses: Darkvision 60 Ft. if replicant of a race that had darkvision, passive Perception 8
Languages: None
Challenge: 1/4 (50 XP)
Actions: Flail. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: (1d6 + 1) bludgeoning damage.