The Lions enter the second Test at the Etihad Stadium, where the roof will be closed, on the brink of their first series victory for 16 years after edging the Wallabies 23-21 in Brisbane last weekend.
Tour captain Warburton is braced for an all-out assault from Australia as they seek to turn the Sydney showdown on July 6 into the pivotal encounter and knows the 2013 squad must produce "something special" if they are to secure their place in history.
"I've had nervous excitement this week," the 24-year-old openside said.
"It's quite strange when you wake up every day knowing that this time in five days you could be series winners, then it's four days, three days, two days....
"The game can't come quick enough. There's no complacency thinking we have a week off because there's another opportunity in the third Test.
"If we need the third Test then the momentum will have swung completely. We definitely want to finish it off this weekend and the players are motivated to do that.
"I think this will be the biggest game of my life. Winning a Lions series will be something nobody's achieved since 1997.
"It's knowing what you could achieve, but also that it will take something special to do that."
Kurtley Beale missed a match-winning penalty in the final act of the game to condemn the Wallabies to defeat in a gripping contest at the Suncorp Stadium that is being talked of as one of the great Lions Tests.
"Australia will bounce back. They were only a kick away from winning last weekend. They know they have a chance of getting the Test series back," Warburton said.
"Australians being Australians, they are very optimistic and competitive. There's no way they'll be down and out.
"They'll come out firing. It's all or nothing for them so we can expect a huge performance from them."
Lions head coach Warren Gatland has made five changes for Saturday, with wing Tommy Bowe, scrum-half Ben Youngs, flanker Dan Lydiate, lock Geoff Parling and prop Mako Vunipola called up to the starting XV.
Bowe displaces the unfortunate Alex Cuthbert, who scored a fine try at the Suncorp Stadium, from the right wing after making a remarkable return from a spiral fracture in his hand.
Nearly three weeks ago it was feared the 29-year-old was out of the tour, only for a surgeon to reassure the Lions that he could still participate in the series if he underwent intensive physiotherapy after the operation.
"I've done anything and everything I can do to try and get it fixed," said Bowe, who will wear a hurling glove for protection.
"There's been protein shakes, calcium, vitamins and omega tablets - you name it, I've taken it. There's been physio constantly, two, three, four times a day, and constant icing.
"It's been a pretty frantic regime I've had over the past couple of weeks, but it's amazing how the hand feels now.
"To be told it was going to be a six-to-eight week injury but to be back in what is two-and-a-half weeks since the surgery is great.
"To now be involved in one of the biggest games of my career is pretty surreal."
Bowe started all three Tests against South Africa in 2009 and recalls the pain of losing that epic series.
"The disappointment and heartache of the second Test in 2009 was one of the lowest points of my career," he said.
"To lose in that fashion, to a last-minute kick, was heart-breaking stuff.
"To be back in that situation again but to be 1-0 up this time with an opportunity to go 2-0 up if we can do the business this weekend is such an incentive. We're primed and ready to go."