Kris Commons is looking to transfer his Celtic form into a dark blue jersey and inspire Scotland to a 2014 World Cup qualifying victory over Wales on Friday night.
The Hoops attacker was controversially omitted from Craig Levein's original squad despite a series of impressive performances for the Scottish champions this season, not least in their Champions League games against Benfica and Spartak Moscow.
"It's great to be back again," he told scottishfa.co.uk "I have been keeping an eye on the squad during the time I have been out and the important thing was to keep playing as well as I could and I knew the opportunity would come. I am now just looking to grab it with both hands."
However, Commons, who last featured for Scotland in the 2-0 defeat to Brazil at the Emirates Stadium in March last year, joined up earlier this week after Robert Snodgrass and Jordan Rhodes were forced to withdraw due to injury.
The 29-year-old is desperate to be involved in the crunch Group A match at the Cardiff City Stadium.
He added: "I am playing with a lot of confidence and that has been reflected in the results we have had at the club, especially in the Champions League.
"Our whole pre-season was set-up to qualify for the Champions League group stages and I think our results and performances so far have given the whole of Scottish football a boost."
Commons believes Scotland are more than capable of emerging from the double-header against Wales and Belgium with their qualification prospects enhanced.
"We need to win against Wales first and then we can see about Belgium after that," he said.
"After two draws it is important to get a win and the way the group is set up, that could put us right into contention."