I'm just about at my wit's end. I wanted to get a male dunsparce to breed ancient power onto my swinub to avoid spending a heart scale later, but I've been biking around under the grand stairway for about three hours now and I've found three shiny sandshrews and zero dunsparce. Anyone who wants to hook me up can have one of these little blue bois.
EDIT: nvm, I finally found one.