So far he has captained his country to the Grand Slam, picked up a Heineken Cup winners medal in Edinburgh and skippered the British and Irish Lions in the last two Tests against the All Blacks.
And triple Heineken Cup winners Toulouse, beaten 29-15 by Stade Français Paris in the Top 14 on Saturday night in front of a record French club crowd of 79,454, will be happy to be back on home ground as they chase a fourth title.
"I think we have got one of the hardest Pools and although I know Llanelli pretty well they have really hit some good form recently," said Thomas.
"Wasps are one of the biggest English teams and the last time I looked Edinburgh were top of the Celtic League so I know it's going to be tough.
"The cup is massively important for us - and even more so for me this year. It would be amazing for me to go back and play in Cardiff. I have obviously got some pretty special memories of that stadium.
"During the Pool stages we will obviously be taking things one game at a time but if we can get out of this Pool and into the quarter-finals we have got to fancy our chances from there on in."