He was a dominant winner at Manawatu on Thursday and also has grass track form, being a winner at Hawera back in April.
Meanwhile, the two Marlborough pacers in Stormy Breeze - who finished with a flat sulky tyre on Thursday - and Sobek look the biggest dangers.
Last year, Butcher took Shardon's Operator to victory in the Wanganui Cup, which is part of the North Island Region Country Cup Championship series. Shardon's Operator, with Butcher, went on to compete in the series final, finishing a creditable second.
Race 8 will be at 4.06pm, as part of a 10-race event. Wanganui Trotting Club will have a prize for the leading trainer and driver on the day, while last year's stake levels have been maintained. The first race will start at 12.20pm and the last will go at 5.20pm.