Transplantation

The applications of necromancy have expanded to the medical field. This spell can be cast in a scenario where the user is performing a surgical operation on any creature, including themself. The operation will consist of the removal of a limb, organ, or other part of the targets body, followed by that parts replacement by one from another organism. The caster must make a medicine check with a DC of 10 + 3x(# of limbs replaced). Example: Replace two eyes, one arm = DC 19 Medicine Check.

The surgery itself takes time equal to six hours times the amount of limbs replaced. Additionally, in the case that the surgery is being performed on the caster themself, another person will need to perform the operation, or the caster can attempt to perform the surgery on themself, but rolling their medicine check at disadvantage.

On a success, the replacement part retains all innate properties it held when it was a part of its predecessor, such as the darkvision of a tabaxi's eyes, or the flight of an aarakocra's wings. The new body part can be attached while in a state of decomposition, but will remain that way permanently or until removed, however this is only a cosmetic flaw, as the limb will be as effective as it was in its prime unless damaged beyond functionality. This spell also cannot transfer the gained abilities of any given body part, such as a fighters strength. There is also limitations based on size, as a body part that is transplanted must be from a creature of the same size as the target.

On a failure, the spell reverts the body of the recipient of the spell to before the surgery began, with the target experiencing a -1 to all ability scores for a month. This effect can be removed with the use of the greater restoration spell.

After the transplantation, the recipient of the surgery will experience a period of adaptation that lasts two months, where they will have a -2 to any skill checks that apply to the new body part (i.e. perception for eyes, athletics/acrobatics for arms, stealth for legs, etc.)

In the case that a single limb or organ of a pair is replaced instead of both, such as an eye, they recipient of the body part will experience only half of the effectiveness, such as darkvision up to 30 feet instead of the usual 60.

Once this spell is cast, whether or not the surgery is successful, the spell cannot be used on the subject of its effect for the one month.