Preheat oven to 350 and line cupcake pan with the liners.
In a medium bowl, combine the cake mix, butter, and milk. Mix until combined.
Scoop the batter into the cupcake liners and fill about 3/4 of the way full. You should have 12 cupcakes.
Bake for 21 minutes. Let cool while preparing the reindeer parts.
Using a double boiler, melt the black candy melts. Once melted, prepare piping bag with and set aside.
Using an edible marker, draw an outline of 24 antlers. Pipe out the antlers and let cool in the fridge to harden.
Wash and dry the double boiler. Melt the milk chocolate wafers and dip the top of the cupcake into the chocolate. Carefully shake off excess chocolate.
Dip remaining 11 cupcakes into the chocolate and let sit for 2 minutes before assembling the "face."
Place a red M&M in the center for the reindeer nose. I like to put the M side face down for a cleaner look.
Place two large edible eyes above the nose.
Using a sharp knife, make an indentation in the cupcake where you want the antlers to go.
Carefully peel off the antlers from the wax paper and slide into the indentation.
Repeat with remaining cupcakes.