I'm thinking of using the following setup for a long-term villain in a campaign I'm planning:
A Lich, for whatever reason, has a prepared Clone spell hanging around (maybe paranoia, maybe a forgotten remnant of pre-lichdom, doesn't matter why). Assume the Lich is physically destroyed, and the phylactery is found and destroyed before the Lich manages to fully re-corporate nearby. Would the soul of the Lich then transfer to the Clone and become alive again? Do any rules or lore exist to say this combination would or would not function?
Note that I am not interested in answers where the phylactery is destroyed before the Lich is destroyed, and the resulting unsureness of where the soul would go.
Related answer here, related question and answer here. D&D 5e answers preferred, but rules/lore from earlier editions or PF will be given consideration for guidelines if 5e has nothing.
Best Answer
Liches can't transfer into clones.
A Lich is an undead which means it is not alive, as explained in Type (MM, p6):
Because a Lich is undead, it can't create a new clone:
Moreover, even if the Lich has a clone created prior to becoming an undead, the spell will never draw the Lich's soul into that clone, for two reasons:
A Lich (like every undead) is not alive and its destruction does not qualify as death. Infact, being a Lich means being already dead:
The Lich's soul is not free, and can only reside in its phylactery: