Quote (OsD @ Jan 30 2013 04:22pm)
well zetsu is made from 1st hokage DNA, possibly even a better catalyst for the edo tensei then a dead body. just food for thought. it would explain how they summoned the unsummonable.. with zetsu's DNA
They "summoned the unsummonable" because oro sacrificed himself to break the death god's stomach to unleash all the souls sealed within... that is why after doing it, orochimaru had a huge gushing gash across his stomach..
As everyone knows however, orochimaru won't die from that crap.. so he body transfered to the 5th zetsu that spawned out as to keep himself alive.