Mix the vodka, apple brandy and apple cider together in a small pitcher and chill for 1 hour.
Pour over ice or an ice ball and fill the glass 2/3 full.
Top off with the hard cider and stir.
Garnish with apple slices.
Notes
I made this in a pitcher for a crowd. If you need a smaller amount, simply measure 1 part each of the vodka, apple brandy and apple cider with 1.5 parts hard cider.