Jesus it seems like whenever I breed I get like 40 Pokemon that don't have the nature I want before I get the one I actually want.
I had to go through 3 full inboxes of Pawniard, 2 full inboxes of Skarmory, 1 full inbox of Miltank (gave up for now, still going), and I'm at 1 full inbox of Chansey(working on this now).