Willie Mullins is responsible for 22 of the 102 entries for the Sky Bet Supreme Novices' Hurdle at the Cheltenham Festival on 11 March.
Ireland's champion trainer saddled Champagne Fever to claim the traditional Festival curtain-raiser last season and this year's team include general ante-post favourite Vautour, Moyle Park and Valseur Lido.
Mullins' huge squad is among 44 Irish-trained entries, with Philip Fenton's The Tullow Tank, the Dessie Hughes-trained Lieutenant Colonel and Pat Fahy's Western Boy still in contention.
Paul Nicholls' trio is headed by German import Irving, who extended his unbeaten hurdling record to three in a Grade Two contest at Ascot in December.
Nicky Henderson's nine entries include Royal Boy and Josses Hill, first and second respectively in the Grade One Tolworth Hurdle at Sandown on 11 January.
Other possible starters include Greatwood Hurdle winner Dell' Arca, Ladbroke Hurdle victor Willow's Saviour and Zamdy Man, who triumphed in the Grade Two Sky Bet Supreme Trial Novices' Hurdle at Haydock Park on 18 January.