Pour the wine, cider and Allspice Simple Syrup into a pitcher or punch bowl. Ladle into glasses. Garnish with orange slices.
Allspice Simple Syrup:
Combine the sugar, allspice and 1/2 cup water in a small saucepan and bring to a boil. Turn off the heat and allow the mixture to steep for about 5 minutes. Strain and let cool to room temperature before using.