Board Thread:Theories and Speculation/@comment-3568954-20180321072100/@comment-3568954-20180321085134

why wouldn't you want to do this? sure the mechanism of immortality means you have an immortal living weapon that has infinite chakra, but summoning an immortal living weapon to do all the work for you is boring.

with this you could summon a few Edo Tensei, have them sit on the side lines or fight along with you, while simultaneously keeping your chakra at 100%.

remember that to get the DNA to summon a persons soul back into a living host is essentially grave robbing, you won't necessarily get anyone of note worthy power. so you could choose a few evil criminals as the hosts find some mediocre shinobi's grave's create the Edo Tensei and than summon them as a source for infinite chakra.