Rey Lee-Lo returns to the Cardiff midfield as the Blue and Blacks face Ospreys at Judgement Day in the final match of the season.
The Samoan centre has recovered from a knee injury, which he suffered in the early March clash against Ulster - a match which happened to be his 150th appearance for the club.
Lee-Lo reunites with Llewellyn in the centre, with Mason Grady moving to the wing in a back three which also includes Rhys Priestland and Jason Harries.
Having missed recent meetings with Benetton and Connacht, Jarrod Evans also returns to slot in at outside half for his final match in the blue and black jersey before a summer move to Harlequins. He will be joined by Tomos Williams at half back.
The Rhondda front row of Corey Domachowski, Liam Belcher and Keiron Assiratti continue their combination in the pack, with James Ratti and Seb Davies joining forces at second row.
An all-international back row of captain Josh Turnbull, Thomas Young and Taulupe Faletau complete the starting line-up.
The bench includes tight-head Dillon Lewis with further firepower provided in the form of internationals such as Lloyd Williams, Rhys Carré and James Botham.
Cardiff:Rhys Priestland; Mason Grady, Rey Lee-Lo, Max Llewellyn, Jason Harries; Jarrod Evans, Tomos Williams; Corey Domachowski, Liam Belcher, Keiron Assiratti, James Ratti, Seb Davies, Josh Turnbull (capt.), Thomas Young, Taulupe Faletau
Replacements:Kristian Dacey, Rhys Carré, Dillon Lewis, Teddy Williams, James Botham, Lloyd Williams, Ben Thomas, Harri Millard