This spell makes an inert duplicate of a creature. If the original individual has been slain, its soul immediately transfers to the clone, creating a replacement (provided that the soul is free and willing to return). The original's physical remains, should they still exist, become inert and cannot thereafter be restored to life. If the original creature has reached the end of its natural life span (that is, it has died of natural causes), any cloning attempt fails.
To create the duplicate, you must have a piece of flesh (not hair, nails, scales, or the like) with a volume of at least 1 cubic inch that was taken from the original creature's living body. The piece of flesh need not be fresh, but it must be kept from rotting. Once the spell is cast, the duplicate must be grown in a laboratory for 2d4 months.
When the clone is completed, the original's soul enters it immediately, if that creature is already dead. The clone is physically identical to the original and possesses the same personality and memories as the original. In other respects, treat the clone as if it were the original character raised from the dead, including its gaining of two permanent negative levels, just as if it had been hit by an energy-draining creature. If the subject is 1st level, it takes 2 points of Constitution drain instead (if this would reduce its Con to 0 or less, it can't be cloned). If the original creature gained permanent negative levels since the flesh sample was taken, the clone gains these negative levels as well.
The spell duplicates only the original's body and mind, not its equipment. A duplicate can be grown while the original still lives, or when the original soul is unavailable, but the resulting body is merely a soulless bit of inert flesh which rots if not preserved.