Having rounded off her 2018 campaign by pushing Enable all the way in the Breeders’ Cup Turf, the Aidan O'Brien-trained Magical is three from three this season – completing her hat-trick in last month’s Tattersalls Gold Cup at the Curragh.
O’Brien also has Hunting Horn and Magic Wand in contention for a Group One contest he has claimed on three previous occasions – with Duke of Marmalade (2008), So You Think (2012) and Highland Reel (2017) respectively.
Sea Of Class won the Irish Oaks and Yorkshire Oaks last summer before only narrowly failing to reel in Enable in a thrilling renewal of the Prix de l’Arc de Triomphe.
She is set to make her eagerly-anticipated reappearance next week, having been off the track since that fast-finishing effort in Paris.
Crystal Ocean will be partnered by Frankie Dettori for the first time.
Masar is a fascinating contender on what will be his first start since winning the premier Classic at Epsom last June.