Leading Irish bookmaker Paddy Power is willing to refund all losing bets on the Spinal Research Supreme Novices' Hurdle if “Irish banker” Dunguib wins the 2m½f Festival opener.

It is a remarkable special from the bookmaker and it could make the Cheltenham roar even louder with punters knowing that the offer could cost the firm up to £2 million.

Unbeaten over hurdles and heading the market at 4/6, Philip Fenton’s superstar looks Cheltenham banker material and Paddy Power can’t believe they have come up with the offer: "I still can't quite believe that we are doing this money back special. If, or when, Dunguib wins, it's hard to say just how much the result will cost us by both paying out on him and returning losing stakes, but it'll be at least a million quid and possibly even double that."

Head to Paddy Power and sign up now, with the firm offering new punters a £50 free bet on any of their Cheltenham markets.

The offer applies only to win singles and the win part of each-way singles placed and Dunguib, who also holds an entry in the Smurfit Kappa Champion Hurdle, must run in the Supreme.