So when sarutobi sensei was fighting lord orochimaru during the invasion, sarutobi sensei used death reaper seal to seal away the first and second hokage with SHADOW CLONES.

Why the hail didn't sarutobi sensei use a shadow clone to use death reaper seal on Lord Orochimaru?

And lord orochimaru was about to bring out a third coffin that was supposedly said to be Sir Minato. Minato was sealed, no?

damn, all the damn hoe-kages are sealed. -__- i wanted sarutobi sensei to come back with edo at least. i gotta admit in part 1 he was a pretty cool guy.