Eftersom magiska varelser i Harry Potter har vissa kroppsdelar som leder till magiska egenskaper, kan trollkarlar ha samma?

Ja, trollkarlarna kan återuppliva en horcrux-anda till en hel kropp:

Här är ett exempel från böckerna:

And now Wormtail was whimpering. He pulled a long, thin, shining silver dagger from inside his cloak. His voice broke into petrified sobs. “Flesh — of the servant — w-willingly given — you will — revive — your master.” He stretched his right hand out in front of him — the hand with the missing finger. He gripped the dagger very tightly in his left hand and swung it upward. Harry realized what Wormtail was about to do a second before it happened — he closed his eyes as tightly as he could, but he could not block the scream that pierced the night, that went through Harry as though he had been stabbed with the dagger too. He heard something fall to the ground, heard Wormtail’s anguished panting, then a sickening splash, as something was dropped into the cauldron.