"Kane and Henry are down and Mitch is down. They gave their best this morning to be right but obviously they're not right.
"It's a huge honour to captain New Zealand and I'm really looking forward to it. We've got five changes."
READ MORE:
• Live updates: Black Caps v Australia, third test
• Black Caps crisis! Five changes as stars ruled out
• Cleaver: How Brendon McCullum revealed Black Caps' biggest problem
• Live: Rate the Black Caps in the final test
Auckland batsman Glenn Phillips made his debut for the visitors after being flown in on Thursday night.
"This is the most patchwork preparation to a game of test cricket New Zealand has ever had to do," Kiwi commentator Ian Smith said.
"This NZ team is like a M*A*S*H unit, I'm expecting Tom Latham to name Hawkeye Pierce and Hotlips Houlihan in the XI today."
With Southee left out, New Zealand has lost a staggering 11,108 test runs and 594 test wickets from their line-up.
Kiwi legend Brendon McCullum was shocked to see Southee rested because of his high recent workload because of all the senior figures already missing from the Kiwi team.
"Wow. It's massive," McCullum told SEN Radio.
"I guess dreams are made of situations like this.
"I'm a little surprised with Matt Henry in for Tim Southee because they are short of leadership."
It is also the first time since 2009 that New Zealand will play a test without Boult, Southee or Williamson in the side.
Fox Cricket commentator Gerard Whateley told SEN Radio the dramatic changes suggest New Zealand is "falling apart".
Australia won the toss and decided to bat first.