Hi, I'm writing a book right now and one of the characters is Russian.
I want him to use a typically Russian expression. The situation is this:
He walks into the room and finds something special that makes his job very easy.
In English, one could say: "It must be my birthday today!" or something like that which signifies a fortunate surprise. Is there a Russian expression for such a situation?
To add more detail: the item has been left behind by an enemy of his. He is thinking that his opponent is incredibly stupid for having made such a careless mistake and that he over estimated him.