Willie Mullins is responsible for five of the 51 entries in the Weatherbys Champion Bumper at Cheltenham on March 13.
Mullins has an incredible record in the race, having won it seven times already, as well as riding Whither Or Which, whom he also trained, to victory in 1996.
This year he can choose from Briar Hill, Clondaw Court, Moyle Park, Sizing Tennessee and Union Dues.
Other major Irish contenders from a 17-strong squad include the Tony Martin duo of Golantilla and Blackmail, the Liz Doyle-trained Le Vent D'Antan and Aidan O'Brien's Shield, who was only fourth on debut.
The home team is headed by Empiracle, Doctor Harper and Sgt Reckless.
Evan Williams has entered the once-raced Milo Man but has still not decided if the race is firmly on his agenda.
"We had to enter Milo Man because he obviously won so well at Taunton and has come out of the race incredibly well," said Williams.
"I'm not going to say he will definitely run because we would want to see some cut in the ground, but we are training him for the race and we will have to see what the weather does between now and then.
"He is a horse I have the utmost confidence in and I think he is a very nice horse but whether he is a bumper horse, I don't know.
"Whatever he does, as long as he is a lucky horse, he could win a very nice race one day."