But while former Edinburgh chief Scriviner pulls no punches as to the scale of the setbacks, he is convinced the short-term difficulties will ultimately bring long-term rewards for the Lions' next opponents.
"It's unprecedented," said Scriviner after Saia Fainga'a and wings Dom Shipperley and Digby Ioane became the latest sidelined stars with hand, wrist and knee injuries respectively.
"We've been tested in a lot of ways for a fair while now. We're confident in whoever steps forward.
"All of a sudden, there's guys all over the country in the frame that are taking notice of injuries and all those sorts of things.
"There has been a lot of those guys who probably were at home a few months ago thinking about next year. I think it's great these guys are getting opportunities.
"That's out of necessity. It just happens. It's not planned that way, but guys get their starts and they come in and bring different dynamics to the team and add enthusiasm. It's only going to serve us well long-term."
The long-term that Scriviner talks of features a three-match series with the Lions next summer.
It's a series that is already whetting the appetite and is also one in which this year's 11 Wallaby debutants could play a major role.
But first on the agenda is the final match before next month's European tour - a third clash with the All Blacks and another which they enter as heavy underdogs.
Previous defeats in Sydney and Auckland have left few favouring an Aussie win yet Scriviner says his team are in confident mood following victory in Argentina.
And while the Kiwis' brace of Rugby Championship successes may have ensured the Bledisloe Cup will remain on New Zealand soil for another season whatever Saturday's result, the new addition to Deans' coaching staff knows motivation won't be a problem in Brisbane.
"We're not going out there just hoping something's going to happen," added Scriviner.
"Every team is vulnerable. We've definitely identified areas where we think we can go and apply pressure, and those points are going to be very important.
"People have been talking about dead rubbers, all sorts of things. That's absolutely not the case for us.
"We're number two in the world, they're number one, and we want to beat them.
"We're playing against New Zealand on our soil in front of our people. That's motivation enough for anyone wearing a gold jersey."