British and Irish Lions captain Warren Gatland has revealed his delight at the inclusion of fellow Welshman Ross Moriarty in Warren Gatland's 41-man squad.
Warburton believes that Moriarty has been Wales' best player since the 2015 World Cup, according to the Daily Mail.
He also said that Moriarty was one of Wales' best players on their 2016 tour of New Zealand and that his experience of having played in New Zealand before will benefit the team.
"When I saw Ross' name (in the Lions squad) I was absolutely thrilled for him," Warburton said.
"It doesn't surprise me one bit because he was probably one of Wales' best players in New Zealand when we went there last summer.
"He is very quick, very explosive, very dynamic, a great ball-carrier, so aggressive in defence – he has been the stand-out player for Wales since the World Cup, really.
"Wales have had a quite stable squad, but he is the only person who has come in (to the squad) recently and made a massive impression.
"I know there are going to be some games (in New Zealand) where it is wet, as it is winter and stuff, but in general the tempo there is going to be out there will suit him down to the ground.
"He is a tremendous athlete, he is athletically similar to a number 13 with his attributes. He will be a great addition to the squad."
Moriarty has won 17 caps for Wales and started 12 out of their last 13 games, including all of the recent Six Nations matches.
The 23-year-old flanker will face competition for a starting berth from Irish trio CJ Stander, Peter O'Mahony and Sean O'Brien.