The image of the leg transplantation draws its power from its proximity to and simultaneous distance from the veneration of relics. It is the prospect of medicine's collaborative miracle. The transplantation miracle and the changes in its graphic representation show the sought-for emancipation of humans from God. It seems to have been high time for a new emphasis on the promise of the resurrection of the body, as well as for new provisions for the journey, a surrogate. This chapter observes that in the fourteenth century a period of technicalization and rationalization began. At this time a greater presence of the patron saints of physicians and transplant surgeons was already becoming visible. In their transmission history, Cosmas and Damian are deeply rooted in a "collective dream". The two saint's changing vita revealed something new in this dream, but it still remains to be understood what is the latent dream content behind this manifest collective dream.