Trainer Mouse Morris feels Nambour will need to raise his game to make his presence felt in the Florida Pearl Novice Chase at Punchestown.
A high-class hurdler for Willie Mullins last season, the six-year-old has since switched stables following the well-publicised split between the champion trainer and owners Gigginstown House Stud.
Nambour made a successful start to his career over fences at Galway last month, a feat matched by four of his five opponents.
Morris said: "I'm happy with him and hopefully he'll run well.
"There's only six runners, but it will take some winning.
"Hopefully our horse has improved since Galway, but I think he'll need to have done.
"I think it will depend on which horse has improved the most."
Gordon Elliott saddles three runners, with Down Royal winner A Toi Phil joined by Tipperary scorer Jetstream Jack and Roscommon victor Space Cadet.
Gigginstown have three representatives in all, with Nambour and A Toi Phil running in company with Disko, who won on his chasing bow at this venue.
The latter's trainer Noel Meade said: "He's in good form and all is well.
"It's a good race - it might as well be a Grade One. It looks very strong.
"We're happy with our horse so we'll see what he can do."
The field is completed by John Ryan's outsider Georges Conn.
