Overturn may face his stiffest test over fences to date if Doncaster's meeting beats the weather on Saturday.
Donald McCain's 2012 Champion Hurdle runner-up has looked imperious in his first two races over fences and now steps up in class to Grade Two level in the Racing Post Lightning Novices' Chase.
His presence has not scared off Lucinda Russell, however, who has entered her promising youngster Tap Night.
Tom George is in red-hot form and his Module was impressive at Newbury last time. He could be joined be stablemate Majala.
Gordon Elliott's Toner D'Oudairies could make the trip from Ireland, with His Excellency, trained by David Pipe, also amongst the 10 entries.
Update:
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