It’s back to the well once more for Leinster in the Guinness Pro14 final and they face familiar opponents in Scarlets, the reigning champions.

The sides' most recent meeting came in the Champions Cup semi-final at the Aviva Stadium in April when Leinster produced an emphatic display to put the Welsh visitors to the sword.

The game ended 38-16 with Tadhg Beirne’s late try obscuring the true nature of the game.

In reality the contest was over at half-time thanks to what has become a trademark Leinster performance; a high-intensity battering that, in full flow that appears unstoppable.

But finals are different right?

Leo Cullen’s side had probably spoiled their supporters en route to the final against Racing 92 and then "couldn't get going at all" in Bilbao in the words of Johnny Sexton.

Leinster beat Racing 92 in the Champions Cup final

Not that it mattered.

Nowhere near their best, they were still too good for the French, who came closer than anyone to figuring out how to beat the Blues.

All the talk about Scarlets’ double raid in Dublin last year, where they beat both Leinster and Munster en route to the Pro12 title, was done before the Champions Cup semi-final and it was all for nought as the gulf in class between the sides was exposed.

But Scarlets have a much better shot in this one. At that point Leinster were building up to a crescendo, the tank was full and the engine was purring.

They might try to talk this one up but with the main prize in the bag and the physical and emotional toll that winning in Europe took this is an opportunity for the Scarlets to get another one over on them.

Munster knew they had a decent chance in the semi-final at the RDS as well with that game coming just a week after the battle in Bilbao.

The hosts didn’t risk Sexton, who returns for the final, while Rob Kearney and Dan Leavy also sat out.

Leinster played like a team that had spent an awful lot of energy the week before but still had the muscle memory to get the job done.

Man of the match James Lowe, absent from the Racing match, brought the necessary buzz to lift the Blues. 

At this stage of the season, after expending such energy that winning mindset is likely to come into play at the Aviva (6pm). 

"They’ve gone on to win the big prize and be crowned Euro champions, and deservedly so," said Scarlets coach Wayne Pivac. 

"To back that up against a good Munster team, not an easy task a week later after celebrations and euphoria of winning it, was to me a testament to how strong that squad is, they’ll be better this weekend with some guys freshened up."

For their part Scarlets, who lost and drew with Leinster in the regular season and finished level on points in Conference B, were back to their best for their semi-final in Scotstoun against Glasgow. 

An early flurry did the damage against the Scots the Scarlets ran out comfortable 28-13 winners. 

"Watching that game was like an action replay," said Cullen, comparing it to Leinster’s semi-final defeat last season.

"Three quick tries in the first half and the opposition chasing the game, it’s like playing into a trap. They are very hard to break down when they’ve got a lead."

The Scarlets have totted up more than 100 points in their last three games and that’s more like the team we are accustomed to and no-one is expecting a repeat of the Champions Cup showdown.

Leinster have made three changes to the side that beat Munster, while Leigh Halfpenny returns for the Llanelli side and Beirne, who will play with Munster next season, starts at number 8. John Barclay is unavailable after surgery. 

The game also serves as a farewell for Isa Nacewa, the captain who has been so central to all of Leinster's glory in the last decade, and Jordi Murphy, who joins Ulster. 

Leinster will be pushed harder this time and if they have the will then they'll find the way.

This is a team that just hasn't quite worked out how to lose important games yet, they might end up winning this one out of habit. 

Leinster: Rob Kearney, Jordan Larmour, Garry Ringrose, Isa Nacewa (capt), James Lowe, Johnny Sexton, Luke McGrath; Cian Healy, Seán Cronin Tadhg Furlong, Devin Toner, James Ryan, Rhys Ruddock, Dan Leavy, Jack Conan.

Replacements: James Tracy, Jack McGrath, Andrew Porter, Scott Fardy, Jordi Murphy, Nick McCarthy, Joey Carbery, Rory O’Loughlin.  

Scarlets: Leigh Halfpenny, Johnny Mcnicholl, Scott Williams, Hadleigh Parkes, Steff Evans, Rhys Patchell; Gareth Davies, Rob Evans, Ken Owens (capt), Samson Lee, Lewis Rawlins, Steve Cummins, Aaron Shingler, James Davies, Tadhg Beirne.

Replacements: Ryan Elias, Wyn Jones, Werner Kruger, David Bulbring, Will Boyde, Jonathan Evans, Dan Jones, Tom Prydie. 

Follow Leinster versus Scarlets in the Pro14 final via our live blog on RTÉ.ie and the News Now App from 5pm, or listen to live commentary on RTÉ Radio 1'S Saturday Sport.