Warren Gatland has named six Ireland internationals in his British & Irish Lions starting team for Saturday's test against Japan at Murrayfield.
Robbie Henshaw and Bundee Aki form the centre partnership, while Conor Murray will be part of a half-back collective alongside Welsh out-half Dan Biggar.
Iain Henderson starts in the second row alongside tour captain Alun Wyn Jones, with Tadhg Beirne and Jack Conan named in the back-row beside Scotland's Hamish Watson.
Ireland and Leinster tighthead prop Tadhg Furlong is among the options on the bench.
Four Scotland internationals have been named in the team with Duhan van der Merwe, Zander Ferguson and Rory Sutherland joining Watson in the XV.
The side is absent of English representation but Owen Farrell and Jamie George provide fly-half and hooker cover respectively after arriving into the Lions' training camp in Jersey on Monday.
The Murrayfield match is being staged the day before the squad departs for South Africa and is only the third Lions fixture on home soil and first against Japan. The first test against the Springboks will be on 24 July, three weeks after the first game of the tour.
"We're anticipating a tough game against Japan – a side that like to play at a high-tempo and shift the ball," said Lions head coach Gatland.
"We saw throughout the World Cup they have attacking threats across the park and a solid defence and set piece.
"I’m pleased with the progress we’ve made during our training camp in Jersey so far, but we’ve a long way to go. You can see that the squad are starting to get to grips with our game strategies, but, as always with a Lions Tour, this takes time to bed in.
"We’re in a good place though and I can tell there’s a lot more to come from this group.
"Everyone in the squad will get a start before the start of the test series, so each member of the squad can put their hand up for test selection.
"We are absolutely delighted to be playing in front of 16,000 supporters in Edinburgh. I’m sure the crowd will give the players an enormous lift before we depart for South Africa on Sunday."
Lions: Liam Williams, Josh Adams, Robbie Henshaw, Bundee Aki, Duhan van der Merwe; Dan Biggar, Conor Murray; Rory Sutherland, Ken Owens, Zander Fagerson, Iain Henderson, Alun Wyn Jones (Captain), Tadhg Beirne, Hamish Watson, Jack Conan .
Replacements: Jamie George, Wyn Jones, Tadhg Furlong, Courtney Lawes, Taulupe Faletau, Ali Price, Owen Farrell, Anthony Watson.