Written by Michael Graham
Eoin Walsh produced him with a run before the final flight and the pair got on terms with Chainofconsequence in jumping it.
They touched down with a narrow lead but Chainofconsequence (9/1) was game on the inner before giving best in the closing stages to lose out by half a length.
Getaway Master plodded on for third, some 15 lengths back, at 4/1.
Ciaran Murphy said: "He was a weak horse when we bought him and he had been disappointing. In hindsight, we mightn't have given him enough time, but he has won his race now.
"He ran respectably in Perth (fourth) last week and, in fairness, to run on heavy ground, come off the boat and win here takes a bit of doing.
"He is a light-framed horse so we'll see where we go now.
"Kieran and Carrie Clarke are successful business people and own a pub in Mullingar and are great owners. It's lovely to have them as part of the team and they have always had a few horses with me."
This was Ivane's 10th run across hurdles and bumpers.