Shane Williams will line up alongside other recent call-ups Christian Wade, Brad Barritt, Billy Twelvetrees, Ryan Grant and Rory Best on Tuesday against the Brumbies.
The Lions are protecting Wales winger George North, who reported a tight hamstring against a Combined Country XV last Tuesday.
Another man who was likely to start against Australia on Saturday, Jamie Roberts, suffered a leg injury in the win over New South Wales Waratahs yesterday.
Lions team to play ACT Brumbies: R Kearney; C Wade, B Barritt, B Twelvetrees, S Williams; S Hogg, B Youngs; R Grant, R Best (capt), M Stevens, I Evans, R Gray, S O'Brien, J Tipuric, T Faletau.
Replacements: R Hibbard, A Corbisiero, D Cole, G Parling, D Lydiate, C Murray, O Farrell, S Zebo.
More top news
Some bright spells this afternoon, with outbreaks of rain. Top temperature 15°C.
It's judgement day at the Millennium Stadium as Cardiff Blues take on the Ospreys and the Newport Gwent Dragons face the Scarlets.
Showers expected throughout the day especially in the north. Drier and brighter elsewhere but cooler than in recent days.