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.
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Low cloud will bring murky conditions with extensive hill fog.
The team, which is manned by volunteers, will operate out of Pontardawe Fire Station in partnership with Mid and West Wales Fire Service.
Dan Biggar has no doubt that Wales remain flrmly in the Six Nations title mix ahead of next Saturday's clash against Scotland.