And what is a stone-cold certainty is that there will be a new name etched onto the famous trophy.
The winners will be the 10th club to lift the trophy following Toulouse with four triumphs, Leinster on three, Leicester Tigers, Munster and London Wasps on two each and Brive, Bath Rugby, Ulster Rugby and Northampton Saints on one apiece.
Clermont have swept all before them en route to the final and if Vern Cotter's team do walk off the winners they will have created a slice of tournament history in the process as no club has won all nine matches in a season.
They finished their Pool 5 schedule with doubles over defending champions Leinster, Exeter Chiefs and the Scarlets with a mighty impressive 23-3 try count in their favour.
They stayed on French soil for both their knock-out contests, beating Montpellier 36-14 in the quarter-finals and then traveling to Stade de la Mosson in Montpellier for their semi-final showdown with former double champions Munster.
They had to survive a late charge by Paul O'Connell's team before booking their place in Dublin, Fijian wing Napolioni Nalaga scoring an eighth minute try and then the trusty boot of Morgan Parra doing the rest in a nervy finish.
The path to the final for Bernard Laporte's Toulon included doubles over Cardiff Blues and Sale Sharks but they went down 23-3 at an emotionally charged Montpellier in their final Pool 6 outing.
The spotlight has been firmly focused on the goal kicking of Jonny Wilkinson in the knock-out stages, the former England and British & Irish Lions outside half contributing all their points.
They had to pull out all the stops before emerging 21-15 quarter-final victors over former champions Leicester Tigers in a tremendous contest and then there was more of the same Wilkinson magic - and back-to-back Heineken Man of the Match awards for good measure - in a 24-12 last four victory over Saracens at Twickenham Stadium.
Now the stage is set for either ASM Clermont Auvergne or Toulon to put their name up in European lights.
- The 2013 all-French final will be the fourth in the history of the tournament: 2003 - Toulouse 22 Perpignan 17 (Lansdowne Road); 2005 - Toulouse 18 Stade Francais Paris 12 (aet, Murrayfield); 2010 - Toulouse 21 Biarritz Olympique 19 (Stade de France).
- With ASM Clermont Auvergne and Toulon appearing in their first tournament final, a new name will be added to the list of champions on 18 May.
- Clermont are bidding to become the first club in history to win all nine matches in the same season on their way to lifting the trophy.
- Either Clermont or Toulon will become the third French winner of the Heineken Cup after Brive (1997) and Toulouse (1996, 2003, 2005, 2010).
- With two clubs in the final, France are guaranteed seven places in the 2013/14 Heineken Cup.
- After the contest, 16 clubs will have contested a Heineken Cup final. The other finalists are: Toulouse (6), Leicester Tigers (5), Munster Rugby (4), Leinster Rugby (3), London Wasps, Stade Francais Paris, Brive, Biarritz Olympique Northampton Saints, Ulster Rugby (2), Cardiff, Bath, Colomiers, Perpignan, Clermont, Toulon (1 each).
- The most points scored by an individual in a final is the 30 scored by Diego
- Dominguez (nine penalties and a drop goal) of Stade Francais Paris in the 2001 defeat by Leicester Tigers.
- The final will be third to be staged in Dublin and the first at the 51,783-capacity Aviva Stadium. The previous two matches in 1999 and 2003 were played at the old Lansdowne Road.