"There's no words to describe it, I got a dream ride all the way - I couldn't believe my luck," Mania said.
"I couldn't fault the old horse. He was second in the Scottish National last year and I thought I should stay loyal to him and thank God I did.
"I never really had an anxious moment, he made a couple of mistakes, that's all."
Mania said that he couldn't dwell on the celebrations because he is riding at Hexham on Sunday.
He added: "I realise this will change my life, but I can't go too mad tonight because I am at Hexham tomorrow."
Auroras Encore may now go for the Scottish National in an attempt to record an unlikely double.