A field of 10 will look to take advantage of Thistlecrack's absence in the Ladbrokes Champion Stayers Hurdle at Punchestown on Thursday.
The Mouse Morris-trained Alpha Des Obeaux, a clear second in the World Hurdle at Cheltenham, is one of three runners who, along with Dedigout (Tony Martin) and Lieutenant Colonel (Sandra Hughes), will carry the Gigginstown House Stud silks.
Willie Mullins has two strong contenders in Shaneshill, runner-up to Thistlecrack at Aintree, and the popular veteran Thousand Stars.
However, one horse conspicuous by her absence is Vroum Vroum Mag, who after being a late absentee from Sandown at the weekend instead looks set to run in the Irish Stallion Farms EBF Mares Champion Hurdle on Saturday.
Diamond King landed the ultra-competitive Coral Cup at Cheltenham and has been declared by Gordon Elliott, with Davy Russell set to maintain the partnership.
The Philip Hobbs-trained If In Doubt is joined by Warren Greatrex's One Track Mind in representing Britain.
Two mares, Jennies Jewel and Legacy Gold, complete the field.
