With "maestro" Johnny Sexton back running the show, Wallabies coach Michael Cheika expects Ireland to be humming as they try to level their three-Test series in Melbourne.
The superstar playmaker returns to the starting Irish line-up for Saturday night's AAMI Park match after coming off the bench in Australia's 18-9 win in the opening Test.
Sexton is one of eight changes the Six Nations champions have made to their run-on side, while the Wallabies have retained their winning squad.
It's the first time Cheika has named the same 23 in successive Tests in his 46 matches since taking over in 2014 as Australian coach.
Sexton replaces young five-eighth Joey Carbery, re-establishing his successful scrum-base partnership with halfback Conor Murray.
"He's the maestro, he's running the show, he's in charge," Cheika said on Thursday.
"Everyone talks about his attack but he's a great defensive player as well with a great kicking game."
Cheika said his team had to be aware of Sexton's talents without putting too much focus on him.
"If you start looking at him, you will miss out on someone else," he said.
"When you do have the opportunity to go together, you all need to go together because he's smart enough to pick you off and he's one of the toughest roosters out there."
Cheika said his decision to retain the same squad was to give his players a chance to improve after their short preparation for game one.
"That was our first game of the season and we had a rush and crammed a lot last week so I'd just like to give those guys another opportunity to get out there and try and do better," Cheika said.
"We need to raise the bar on ourselves and on our own standards this week to give ourselves a chance of winning the game."
Backrower Ned Hanigan wasn't picked despite recovering from a knee injury, with Cheika happy with Pete Samu, who they wrestled home from New Zealand, as well as as fellow debutant Caleb Timu.
"It's fair to give those guys another opportunity," Cheika said.
"Caleb didn't get many carries and we want to focus on him getting more of the footy this week because that's his strength.
"I thought Pete Samu was excellent when he came on - good work-rate, read the game nicely and I'm sure he will have an good impact when he comes on this week."
Israel Folau, Marika Koroibete, Samu Kerevi, Kurtley Beale, Dane Haylett-Petty, Bernard Foley, Will Genia, Caleb Timu, Michael Hooper (capt), David Pocock, Adam Coleman, Izack Rodda, Sekope Kepu, Brandon Paenga-Amosa, Scott Sio.
Res: Tolu Latu, Tom Robertson, Taniela Tupou, Rob Simmons, Lukhan Tui, Pete Samu, Nick Phipps, Reece Hodge.
Australian Associated Press