hiruzen only do dmg at his death though, not so much for 4 rounds. is he worth being in there, replacing another ninja that can boost himself and other ninja's attack or ninjutsu dmg?
for me doesnt worth to put him inside... 1st you lose time with his skill at his death... 2nd you will lose 1 ninja who can boost your team and himself attk + Ninj so no... i wouldnt put him for sure!